Olune

Before you build · Stage 1: pick the idea

Vibe coding app ideas: the 19 that builder lists keep repeating, and which to skip

Builder tools publish the same vibe coding project ideas again and again. We counted the competition for the 19 most repeated and say which are fine to learn on and which to skip as a business.

Updated

Key takeaways

  • 19 app ideas appear on at least 3 of the 16 builder idea lists we read, including lists from Lovable, Base44, Appwrite and Weekend MVP. Appointment booking leads, on 7.
  • All 19 are crowded on Google US (October 2026): for the obvious search (a concrete niche for job boards and directories), 3 to 9 of the top 10 results were products doing the job. The narrower version we searched was still crowded for 17 of the 19.
  • Our call as a business (editorial), for a solo builder with no audience: 0 build, 2 narrow it, 17 skip. The two survivors are RFP responses for architecture and engineering firms, and Google-review requests for one contracting trade.
  • All 19 are fine as learning projects, and the table says what each one teaches. The skip calls only apply if you plan to charge for the app.
  • To find an idea with a buyer, start from evidence you can link to: complaints about a named tool, a price rise, a shutdown, or a manual step in your own job. Copyable search strings are below.

How we judged them

  1. Why these 19. Builder forums have noticed the repetition. An r/vibecoding thread asking why most showcased projects are 'slop' drew more than 90 comments (posted 2026-08-21; counted 2026-10-10), and a post about finding a near-identical competitor midway through every build had 67 on the same date. So we checked the ideas the lists keep handing out.[17], [18]
  2. What we read. 16 idea lists from builder tools and idea sites, read in October 2026: Lovable (two), Base44, Appwrite, Weekend MVP, Questera (two), Kimi, CatDoes, Dyad, Greensighter, Startupa.ge, PlanMySaaS, Knack, Zapier and Bolt. An idea made this page if at least 3 lists name a version of it. 19 did. We recorded idea names only.[1], [2], [3], [4], [5], [6], [7], [8], [9], [10], [11], [12], [13], [14], [15], [16]
  3. What we searched. On Google US on 2026-10-13, for each idea: the obvious search, a Product Hunt search (site:producthunt.com/products plus the idea), an App Store search (site:apps.apple.com) where the idea is usually a phone app, past-year Reddit searches for complaints and 'I built' posts, and one narrower version. The sources give every counted search in its exact wording. A product is a top-10 result whose main job is this idea, including single-purpose pages from big companies such as Canva or Adobe. Lists, forums, videos and templates do not count. Product Hunt and App Store figures count products in the first 20 results (two pages), so read them as minimums. Thread dates marked est. were estimated from the thread's ID; the others come from the thread's own feed.
  4. Who the calls are for. A solo builder using Cursor, Claude Code, Lovable, Bolt, v0 or Replit, with no audience, no special access to an industry, and evenings and weekends to work. If you have an audience or customers lined up, read the evidence and make your own call.
  5. How we called them (editorial). We used two of Olune's seven scores, pain level and competition, plus the test its verdict applies: a saturated market with no angle is a reason to kill. These calls are our judgement, written for this page. No idea here was run through the Olune validator.

What the calls mean

What the calls mean
Our callWhat it means hereClosest label on Olune's /startup-ideas pages
SkipDo not start a business here, for the reader above. Fine as a learning project.Trap or crowded
Narrow itThe general idea is crowded, but one narrower version showed no crowd of dedicated products in the top 10, and people described the problem in public in the past year.Crowded in general; a narrow version may be promising
BuildDemand plus room to win as a general product. None of the 19 qualified.Promising

The 19 ideas at a glance

Ordered by how many of the 16 lists name the idea. All 19 are fine to learn on; the teaching column says what each one makes you build (editorial). Counts are from Google US, October 2026 (checked 2026-10-13), and the narrower search is quoted as we ran it.

The 19 ideas at a glance
IdeaLists (of 16)Products in Google top 10Product Hunt / store, first 20Narrower version we searchedWhat it teaches (editorial)As a business (editorial)
Appointment booking76 results, 4 companies15'mobile dog grooming booking app': crowdedTime zones, calendar sync, paymentsSkip
Habit tracker65 to 6 of 916 / 16 App Store'adhd habit tracker app': crowdedSign-in, streak logic, remindersSkip
AI meal planner6614 / 14 App Store'meal planner app for picky eaters and allergies': crowdedLLM calls with structured outputSkip
AI flashcards from notes5914 / 13 App Store'convert lecture pdf to anki cards ai': crowdedFile upload, PDF parsing, LLM callsSkip
CRM (personal, freelance or niche)53 of 9, plus 4 lists11'simple crm for tattoo artists': crowdedRelational data, search, CSV importSkip
Client portal53, plus 2 templates9'collect documents from clients for bookkeepers': crowdedRoles and file permissionsSkip
AI proposal generator5815'ai rfp response software for architects': general RFP vendors, plus 2 builders' Reddit postsTemplates, LLM drafting, PDF exportNarrow it
AI meeting notes56 of 9, plus Google Meet17'ai progress notes for therapists': crowdedAudio upload, transcription APISkip
Subscription tracker54 results, 3 companies10 / 9 App Store'saas spend management for small teams': vendors presentRecurring dates, notificationsSkip
Invoice or quote generator47, all free per their titles11 / 17 App Store'invoice and estimate app for solo handyman': crowdedPDF generation, payment linksSkip
AI resume builder4917'military to civilian resume translator ai': free toolsDocument parsing, LLM rewritingSkip
Content repurposing43 (8 for podcast clips)15'sermon clips ai': crowdedVideo processing, background jobsSkip
Testimonials and reviews4513'google review request app for contractors': 2 toolsForms, embeddable widgetsNarrow it
AI journaling46 results, 5 companies15 / 11 App Store'grief journal app': crowdedPrivate data, encryption at restSkip
Social media scheduler43 of 9, plus lists17'pinterest scheduler': crowded, Pinterest's own help page firstOAuth to platform APIs, job queuesSkip
Freelancer bookkeeping or tax45, plus the IRS14'bookkeeping app for freelancers philippines bir': 3 or more vendorsMoney math, CSV importSkip
Expense splitter37 results, 4 companies8 / 15 App Store'free splitwise alternative no limits': 6 alternatives already rankShared balances across usersSkip
Niche job board37 to 9 per niche probed18'welding jobs board', plus climate tech and Rust: all crowdedListings, search, paid postsSkip unless you own the audience
Niche directory37 for 'ai tools directory'19'ai tools directory': crowdedData collection, generated SEO pagesSkip unless you hold unique data

Google US, English, checked 2026-10-13. Results move from day to day: a same-day re-check of "habit tracker app" returned 5 habit apps instead of 6, and names in the lower slots can change between checks. Product Hunt and store figures are minimums, not totals. Re-run the searches before you decide; each is listed in the sources in its exact wording.[1], [2], [3], [4], [5], [6], [7], [8], [9], [10], [11], [12], [13], [14], [15], [16], [19], [20], [21], [26], [27], [28], [29], [34], [35], [36], [37], [42], [43], [44], [45], [48], [49], [50], [51], [53], [54], [55], [58], [59], [60], [64], [65], [66], [67], [72], [73], [74], [75], [84], [85], [86], [87], [91], [92], [93], [97], [98], [99], [100], [104], [105], [106], [107], [110], [111], [112], [113], [117], [118], [119], [120], [124], [125], [126], [127], [130], [131], [132], [133], [146], [147], [148], [149], [152], [153]

Our call on each idea

These are editorial assessments that borrow two of Olune's seven scores (pain and competition). They are not Olune validator runs. Each card gives the demand we found, the competition we counted on Google US in October 2026 (Product Hunt and App Store figures count products in the first 20 results), what would kill it and one narrower angle. Your version, with you as the founder, can come out differently, so run your own. Add who you are and how you would reach these buyers: 3 of the 7 scores depend on it.

  1. 1. Appointment booking

    Skip

    Our call (editorial)

    The most repeated idea on the lists, and one where the build is no barrier.

    Demand.
    Steady. In the past year, a Reddit poster asked for a booking system for mobile dog grooming, Calendly users described fake bookings and no-shows, and a reply in a Squarespace thread called Acuity's add-on cost a tax on freelancers.
    Competition.
    6 of the top 10 for 'appointment booking app' are products from 4 companies: Square Appointments (three listings), Calendly, Google Workspace and Setmore, in two checks on 2026-10-13 (Google US). 15 on Product Hunt.
    What kills it.
    Switching costs: client lists, deposits and payments already live in the current tool. One r/SaaS builder reported a full salon booking app in under an hour, so the build stops nobody.
    Angle.
    Mobile dog groomers: crowded too (MoeGo, Groomsoft, Pawfinity). Olune's /startup-ideas pages rate a nearby job promising: cutting dental no-shows on top of the practice's existing software.
    [1], [4], [5], [6], [7], [10], [14], [19], [20], [21], [24], [23], [22], [25]

  2. 2. Habit tracker

    Skip

    Our call (editorial)

    A running joke in builder forums, and one of the most crowded app categories we checked.

    Demand.
    People want help with habits and ask in public whether paid trackers are worth it. A 2026-10-05 r/vibecoding meme post about vibe coding a meal planner drew at least 57 comments, many mocking meal planners and habit trackers as the default vibe-coded app.
    Competition.
    5 to 6 of the 9 results for 'habit tracker app' were habit apps in two same-day checks (Google US, October 2026). 16 on Product Hunt, 16 on the App Store.
    What kills it.
    Being found. One r/ProductivityApps builder reported about 100 users after what the post describes as 6 months of spare-time work (the title says 8), posted 2026-07-03. Another called their own app roughly the 500th one.
    Angle.
    Adults with ADHD. Still crowded: Focus Bear, Lunatask and others rank. Olune's /startup-ideas pages label habit trackers a trap, and this card agrees.
    [1], [2], [3], [4], [9], [14], [26], [27], [28], [29], [30], [33], [31], [32]

  3. 3. AI meal planner

    Skip

    Our call (editorial)

    Crowded, and a free general chatbot already writes a weekly plan.

    Demand.
    Real frustration: Reddit threads in the past year say planning apps feel like more work and that grocery lists are the weak point.
    Competition.
    6 of the top 10 for 'ai meal planner' are products, among them StrongrFastr, FoodiePrep, Clove and NumYum (Google US, October 2026). 14 on Product Hunt, 14 on the App Store.
    What kills it.
    No reason to switch. Replies to an r/startup feedback thread (2026-01-08) said ChatGPT already writes a diet plan and that a cart that fills itself already exists.
    Angle.
    Families with picky eaters or allergies: crowded, and the r/PickyEaters post in that search is itself a beta of an AI planner for this exact group. Olune's /startup-ideas pages label AI meal planning a trap.
    [1], [2], [3], [4], [9], [14], [34], [35], [36], [37], [38], [39], [40], [41]

  4. 4. AI flashcards or quiz from your notes

    Skip

    Our call (editorial)

    Nine products in the top 10, and an audience that hunts for free tools.

    Demand.
    Students complain about Quizlet's limits and ask for free alternatives. Builders answer those threads with their own free apps.
    Competition.
    9 of the top 10 for 'ai flashcard generator' are products, including Quizlet, RemNote, Canva and Kahoot (Google US, October 2026). 14 on Product Hunt, 13 on the App Store.
    What kills it.
    Price. Anki and Quizlet already cover the job, and the people asking mostly want it free.
    Angle.
    Medical students turning lecture PDFs into Anki cards: crowded (Ankify, AnkiDecks, StudyPDF and a free open-source converter).
    [1], [2], [3], [4], [9], [42], [43], [44], [45], [46], [47]

  5. 5. CRM (personal, for freelancers, or for one niche)

    Skip

    Our call (editorial)

    People abandon personal CRMs, and every niche we tried already has one.

    Demand.
    Reddit threads ask whether a personal CRM is worth the upkeep, and one Notion thread describes building a whole system and then never using it.
    Competition.
    'personal crm' shows 3 products (Dex, Monica, Covve) beside 4 comparison lists; 'crm for freelancers' shows Flowlu, Pipedrive, Moxie and monday.com (Google US, October 2026). 11 on Product Hunt.
    What kills it.
    Data entry. If every contact and note is typed by hand, users stop.
    Angle.
    Tattoo artists: crowded (DaySmart Body Art, Tattoogenda, TattooPro and more). Olune's /startup-ideas pages call a generic small-business CRM a trap and rate only narrow versions promising, such as a sponsorship CRM for working creators.
    [3], [5], [6], [12], [14], [48], [49], [50], [51], [52]

  6. 6. Client portal for freelancers and agencies

    Skip

    Our call (editorial)

    Accounting and web-design forums ask whether clients will log in at all.

    Demand.
    Getting files out of clients is a real chore: accountants ask on Reddit how to get clients to send what they need.
    Competition.
    3 products in the top 10 for 'client portal for freelancers' (ClientManager, Moxie, AHSuite), plus two templates and a review of 22 portal options for web designers (Google US, October 2026). 9 on Product Hunt.
    What kills it.
    Clients prefer email. 'Do clients actually use client portals' is an r/Accounting thread title, and portals already ship inside CRMs and practice software.
    Angle.
    Bookkeepers collecting client documents: crowded (LedgerDocs, ezFileDrop, ScribeOS, DocGenie).
    [1], [4], [7], [10], [11], [53], [54], [55], [56], [57]

  7. 7. AI proposal generator

    Narrow it

    Our call (editorial)

    Skip the generic generator. RFP responses for architecture and engineering firms held up when narrowed.

    Demand.
    Proposals take time: one r/b2bmarketing poster says a single proposal took 8 hours. Two builders posted RFP tools for architecture firms on r/Architects in 2026, and one says existing RFP platforms are designed for enterprise sales teams.
    Competition.
    Generic: 8 of the top 10 for 'ai proposal generator' are products, many free per their titles (Venngage, Proposify, QuillBot, Canva and others), Google US, October 2026; 15 on Product Hunt. Narrowed: 'ai rfp response software for architects' showed general RFP vendors (DeepRFP, Inventive AI, AutoRFP.ai), RFP software rankings and explainers from Loopio, Gartner, Arphie and Thalamus, and the two r/Architects builder posts. No architecture-specific product page ranked (re-check, 2026-10-13).
    What kills it.
    Two builders have already posted tools for this exact buyer on r/Architects. Small firms may not pay, and a general RFP vendor can add an architecture template. Check whether firms already pay outside writers for RFPs, and whether a template covers most of the work.
    Angle.
    Responses for one kind of architecture or engineering firm. Consistency note: Olune's /startup-ideas pages rate an AI RFP tool for B2B sales teams promising. The vendors in this search already pitch at sales teams, so this angle is one profession their tools are not built around.
    [1], [4], [5], [11], [13], [58], [59], [60], [61], [62], [63]

  8. 8. AI meeting notes and action items

    Skip

    Our call (editorial)

    Google Meet, Zoom and Notion already ship it as a feature.

    Demand.
    Strong and specific: Reddit asks for notes without a bot in the call, for in-person meetings, and for private processing.
    Competition.
    6 of the 9 results for 'ai meeting notes' are products (Read.ai, Notion, Otter, Meeting.ai and others), plus Google's guide to letting Meet take notes (Google US, October 2026). 17 on Product Hunt.
    What kills it.
    Bundling. Google Workspace lets admins turn on Gemini note-taking in Meet for Business Standard, Business Plus, Enterprise Standard and Enterprise Plus (as of October 2026), and Zoom's own note-taking page ranks for the free note-taker search.
    Angle.
    Therapists' progress notes: crowded (Mentalyc, Upheal, Supanote, SimplePractice's built-in tool), and clinical notes carry health-privacy duties.
    [1], [4], [5], [11], [13], [64], [66], [68], [65], [67], [69], [70], [71]

  9. 9. Subscription tracker or cancellation helper

    Skip

    Our call (editorial)

    Many free or one-time-purchase apps, and buyers who balk at a monthly fee to track monthly fees.

    Demand.
    People ask for Rocket Money alternatives and better trackers on r/personalfinance and r/ProductivityApps.
    Competition.
    4 of the 9 results for 'subscription tracker app' are products from 3 companies, including Rocket Money and Bobby (Google US, October 2026). 10 on Product Hunt, 9 on the App Store, and at least 6 Reddit posts in the past year from builders of their own subscription tracker.
    What kills it.
    Willingness to pay. One r/iosapps builder chose a one-time price on purpose, and many people will not link a bank account to a new app.
    Angle.
    Unused SaaS seats for small teams: Zylo, Vertice, Substly and SpendHound already sell it.
    [1], [4], [5], [9], [11], [76], [77], [72], [73], [74], [78], [79], [80], [81], [82], [83], [75]

  10. 10. Invoice or quote generator for freelancers

    Skip

    Our call (editorial)

    Page one is free generators from big companies, and the louder freelancer problem is getting paid.

    Demand.
    Freelancers ask on Reddit how to chase late payment. One r/Solopreneur thread argues it depends on the bargaining power a freelancer has with the client, and the invoice tool rarely matters.
    Competition.
    7 of the top 10 for 'invoice generator for freelancers' are products, all free per their titles, including Zoho Invoice, Canva and Adobe Express, plus a Wise template (Google US, October 2026). 11 on Product Hunt, 17 on the App Store.
    What kills it.
    Free tools from Zoho, Canva, Adobe and Wise, and for trades, suites such as Joist and Jobber. An invoicer that chases late payments was posted on Reddit in October 2026, so that angle is taken too.
    Angle.
    Consistency note: Olune's June 2026 editorial teardown of an invoicing app for freelancers called it Sleep on it, and only if it sells one trade's billing workflow (retainers, milestone billing). This card judges the generic generator. Solo handymen, our narrower test, was crowded (Joist, Jobber, Housecall Pro, Billdu).
    [1], [2], [4], [10], [89], [88], [84], [85], [86], [90], [87]

  11. 11. AI resume builder or resume tailoring

    Skip

    Our call (editorial)

    Nine of the top 10 results are resume builders, and some job seekers call the category a scam.

    Demand.
    Job seekers want tailored resumes, but threads such as 'Most AI resume builders are scams' show distrust, and some tailor with ChatGPT instead.
    Competition.
    9 of the top 10 for 'ai resume builder' are products (Teal, Kickresume, Rezi, Enhancv, Adobe and others), confirmed in a re-check on 2026-10-13 (Google US). 17 on Product Hunt.
    What kills it.
    Distrust of subscription billing across the category, and a free general chatbot that does the core job.
    Angle.
    Veterans moving to civilian jobs: free translators and guides from nonprofits, a university and the VA leave little room to charge.
    [3], [4], [8], [9], [94], [96], [91], [92], [95], [93]

  12. 12. Content repurposing (long video or podcast into clips and posts)

    Skip

    Our call (editorial)

    Clipping is now a button inside editors creators already use.

    Demand.
    Creators complain about the leading clipper's output and support, and ask for free alternatives.
    Competition.
    'turn podcast into clips ai' shows 8 products, including OpusClip, Kapwing, CapCut and HeyGen; 'content repurposing tool' shows 3 plus 4 'best of' lists (Google US, October 2026). 15 on Product Hunt.
    What kills it.
    Clipping bundled into the editors creators already use.
    Angle.
    Church sermon clips: crowded (Sermon Clips, Sermon Shots, Pulpit AI, OpusClip's church page). Olune's /startup-ideas pages label a long-video clipping tool a trap.
    [4], [7], [11], [13], [102], [103], [101], [98], [97], [99], [100]

  13. 13. Testimonial or review collection

    Narrow it

    Our call (editorial)

    Skip the testimonial widget. Google-review requests for one contracting trade held up when narrowed.

    Demand.
    The local version recurs on Reddit. One r/smallbusiness poster estimated that about 1 in 20 customers leave a Google review when asked, and an HVAC owner asked why happy customers still do not.
    Competition.
    Generic: 5 of the top 10 for 'testimonial collection tool' are products (Testimonial.to, Senja, VideoAsk, Famewall, Feedspace), Google US, October 2026; 13 on Product Hunt. Narrowed: 'google review request app for contractors' showed 2 dedicated tools (ScoreMyReviews and ContractorCore CRM's review feature) among guides, Facebook posts and Reddit threads, in a re-check on 2026-10-13.
    What kills it.
    Review platforms (GatherUp, ReviewInc, TrueReview) already sell review requests, and field-service vendors publish guides on it, so a standalone tool can be hard to sell. Find out what the trade pays for now before you build.
    Angle.
    Review requests for one trade, such as roofers or HVAC firms, sent after each job. Consistency note: Olune's micro-SaaS page rates review-request automation for local service businesses promising, and its weekend-project page calls it crowded as a two-day build. Both fit: the general version is crowded, and one trade is the opening.
    [1], [7], [10], [11], [108], [109], [104], [106], [107], [105]

  14. 14. AI journaling or mood app

    Skip

    Our call (editorial)

    Five products hold six of the top 10 results, and the private, offline and minimal angles are taken.

    Demand.
    Some users are leaving a long-standing journal app after price changes, and others say they do not trust any journaling app with their private writing.
    Competition.
    6 of the top 10 for 'ai journaling app' are products from 5 companies, including Mindsera, Reflectly and Rosebud (Google US, October 2026). 15 on Product Hunt, 11 on the App Store.
    What kills it.
    Trust and retention: people hesitate to hand private writing to a new app, few pay, and closeness to mental health raises the stakes. One r/iosapps developer calls yet another journaling app one of the worst indie sins.
    Angle.
    Grief and pregnancy loss: a free app exists, and Grief Works, Grief Refuge and Untangle rank. Olune's /startup-ideas pages label AI journaling a trap.
    [1], [2], [3], [9], [114], [115], [110], [111], [112], [116], [113]

  15. 15. Social media scheduler or content calendar

    Skip

    Our call (editorial)

    To be found, a new scheduler has to get onto someone else's comparison list.

    Demand.
    Creators and small teams call the big schedulers too expensive, including for personal X and LinkedIn accounts.
    Competition.
    'best social media scheduling tools 2026' returned 10 lists and no product page, and three of the lists were written by scheduler vendors (Google US, October 2026). 17 on Product Hunt.
    What kills it.
    Discovery through lists, and each platform's API. Pinterest business accounts can schedule Pins inside Pinterest (as of October 2026), and that help page ranks first for 'pinterest scheduler'.
    Angle.
    Pinterest-only: crowded, starting with Pinterest itself, then Tailwind, Buffer and Later. Olune's /startup-ideas pages rate schedulers for solo creators crowded.
    [1], [4], [6], [13], [122], [123], [118], [119], [121], [120]

  16. 16. Freelancer bookkeeping or quarterly-tax helper

    Skip

    Our call (editorial)

    The IRS's own estimator ranks first, and wrong numbers carry real liability.

    Demand.
    One UK freelancer described losing 3 hours of a Sunday to bookkeeping, and others ask on Reddit how to track income and expenses as a freelancer.
    Competition.
    For 'quarterly tax estimator for freelancers', the IRS Tax Withholding Estimator ranks first, then calculators from Keeper, TaxAct, Bench and TurboTax (Google US, October 2026). 'ai bookkeeping for freelancers' shows at least 5 dedicated products. 14 on Product Hunt.
    What kills it.
    Liability for wrong numbers, rules that differ by country, and tax companies' calculators that already rank.
    Angle.
    One country's freelancers, such as the Philippines, built by someone who knows that tax system: at least 3 vendors already appear. Consistency note: Olune's /startup-ideas pages rate bookkeeping for one industry promising as a service business (paid human work), a different job from a self-serve app.
    [1], [3], [4], [13], [128], [129], [124], [125], [126], [127]

  17. 17. Expense splitter for groups

    Skip

    Our call (editorial)

    A free incumbent with network effects, and alternatives already answered its free-plan limit.

    Demand.
    A real complaint: Splitwise's help page confirms a daily expense limit on its free tier (as of October 2026), and Reddit threads ask for alternatives.
    Competition.
    7 of the top 10 for 'expense splitter app' are product pages from 4 companies: Splitwise (three listings), Kittysplit, Splid and SplitMyExpenses (Google US, October 2026). 8 on Product Hunt, 15 on the App Store.
    What kills it.
    The whole group needs the same app, which favours the incumbent, and users expect a basic split to be free. We counted at least 9 Reddit posts in the past year from builders presenting their own Splitwise alternative (some may be cross-posts by the same builder).
    Angle.
    Free with no daily limit: already crowded, with 6 alternative apps ranking for 'free splitwise alternative no limits'. If you test it anyway, say what yours does that those 6 do not.
    [1], [2], [4], [134], [135], [136], [130], [131], [132], [137], [138], [139], [140], [141], [142], [143], [144], [145], [133]

  18. 18. Niche job board

    Skip

    Our call (editorial)

    Skip unless you already own the audience: a newsletter, community or following in that field.

    Demand.
    Builders keep launching niche boards. One r/SaaS builder launched one in 2 weeks.
    Competition.
    Every niche we probed had boards: 7 for 'climate tech jobs board', 9 job sources including two Rust-only boards for 'remote rust developer jobs', and at least 8 for 'welding jobs board' (Google US, October 2026). 18 on Product Hunt.
    What kills it.
    Chicken and egg: employers will not pay without job seekers, and job seekers will not come without listings. A Rust board posted on Reddit was built by scraping hundreds of companies' hiring pages, so listings are easy to copy.
    Angle.
    A field where you already run the newsletter or community. Replies on r/SaaS said to win one side first, usually employers. Olune's /startup-ideas pages rate niche job boards crowded or a trap.
    [1], [3], [12], [150], [146], [147], [148], [149], [151]

  19. 19. Niche or local directory

    Skip

    Our call (editorial)

    Skip unless you hold data nobody else can scrape: builders and AI scrapers make directories cheap to launch.

    Demand.
    Directories keep getting built, and their builders keep asking on Reddit how to earn traffic and how to make money from it.
    Competition.
    'ai tools directory', the most common kind, shows 7 directories in the top 10, including Futurepedia and Aixploria (Google US, October 2026). 19 on Product Hunt.
    What kills it.
    Rankings take a long time to earn, and money comes late, if at all. An r/Solopreneur thread puts it plainly: building is easy now, ranking is the hard part.
    Angle.
    Trust or filtering for one specific situation, on data you collect yourself. Reddit replies write off generic 'near me' directories.
    [1], [12], [14], [154], [155], [152], [153], [156]

Check your narrower version

Type your version of one of these ideas: who it is for, what they use now, and how you would reach them. Olune scores it free on 7 dimensions. A free sign-in then runs the research: search demand, public complaints from Reddit and forums found through Google, and competitors. You get Cook it, Sleep on it or Kill it, with the reasoning. A crowded idea with no angle is a normal Kill. After a Kill, it can generate suggested pivots on request. 3 a day, no card.

Free score, no account. The research needs a free sign-in.

Before you pick one

  • Gaps fill within weeks. Mealime's own site gives 2026-10-21 as its closing date, and Splitwise's help page confirms a daily expense limit on its free tier (as of October 2026). Other apps moved on both openings fast. See how fast those gaps filled.[157], [134], [133]
  • Crowded can still work. Paul Graham wrote in 2012 that 'A crowded market is actually a good sign', provided you know what the incumbents overlook. If you cannot name that, the market is just crowded. Check any idea in five searches.[158]
  • What Olune can and cannot see. Olune finds competitors through Google and Product Hunt and reads public Reddit threads found through Google. It has no App Store, Google Play or Chrome Web Store signal, which matters for the phone-app ideas on this list. What the validator checks. For a step-by-step check before you open your editor, see validate before you build.

Where ideas with real demand come from: search strings to copy

Each search starts from evidence that someone has the problem now. Copy one, replace the brackets, and set Google Tools to Past year. Then read the threads for specifics: who is complaining, what they use, and what they would pay to stop doing.

1. Complaints about a named tool

site:reddit.com "[tool name]" (alternative OR "switched from" OR "too expensive")

2. A price rise or a new free-plan limit

"[tool name]" ("price increase" OR "free plan" OR "new limit") site:reddit.com

3. A shutdown or a discontinued app

"[category] app" ("shutting down" OR "discontinued" OR "sunsetting")

4. A manual step in your own job

site:reddit.com/r/[your trade] ("is there a tool" OR "how do you") spreadsheet

5. Bad reviews of a paid app

"[app name]" ("1 star" OR "cancelled" OR "refund") review

Ideas Olune's own pages rate promising

Olune's /startup-ideas pages label these promising. They are editorial cards, not validator runs. What they share: a business buyer and a job that keeps coming back. Each still needs your own check.

Test one before the weekend build

Pick the idea you would build, then describe it the way you would sell it: the buyer, the job they do by hand today, and where you would find the first ten. Olune scores it free, and a free sign-in runs the research on demand, complaints and competitors before it gives a verdict. If it says Kill it, read the reasons before you spend a weekend building. The analysis is LLM-assisted and can vary between runs, so treat it as one check next to your own. 3 a day, no card.

Free score, no account. The research needs a free sign-in.

Common questions

What app should I vibe code?

If you want to learn, build any of the 19 on this page. If you want paying users, start from a complaint you can link to: a named tool that annoys people, a price rise, a shutdown, or a manual step in your own job. Then check that your narrower version is not already crowded.

What are good vibe coding app ideas for beginners?

Any of the 19 types here works as a beginner project, because each is a small, well-understood app with many existing versions to compare against. A habit tracker teaches sign-in, streak logic and reminders; an expense splitter teaches shared balances across users; a flashcard app teaches file upload and LLM calls. The table above says what each of the 19 teaches.

Which app ideas are oversaturated?

On our counts, the most crowded of the 19 are AI resume builders and AI flashcard generators, each with 9 products in Google's US top 10 in October 2026, then AI proposal generators with 8. On Product Hunt, AI tools directories (19 products in the first 20 results) and job boards (18) showed the most, and r/vibecoding now jokes about habit trackers and meal planners.

Are these ideas fine as learning projects?

Yes, all 19 are fine to learn on: the skip calls on this page only apply if you plan to charge for the app. A finished build is still no evidence that people will pay, so test demand before you charge.

Can a crowded idea still work?

Yes, if you can name what the current products miss and point to people complaining about it. Paul Graham's 2012 essay calls a crowded market a good sign when you have that insight. Olune's verdict treats a saturated market with no angle as a reason to kill.

Can you make money with a vibe coded app?

Possibly, but we could not verify an income figure for a new solo builder in any of these 19 types, so this page makes none. Revenue numbers in Reddit and video titles could not be checked, so we left them out.

Does Olune check the App Store or Chrome Web Store?

No. Olune has no App Store, Google Play or Chrome Web Store signal, so for a phone app or an extension, search the stores by hand. Its research covers search demand, public Reddit and forum threads found through Google, and competitors from Google and Product Hunt. The analysis is LLM-assisted and can vary between runs.

Sources

Each number in brackets on this page points here. Prices and limits change; the date is when we read the page.

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Read next

Part of the vibe coding guide: what to check before, during and after the build.