Building got easy. Cursor, Claude Code, and v0 mean anyone can ship a working product in a weekend. So the bottleneck moved. It's not “can I build this?” anymore. It's “should I?”
Most builders don't have a shortage of ideas. They have a Notes app full of half-baked ones. They ask ChatGPT which is best, and ChatGPT — trained to please — says all of them sound interesting. Six months later, they're still building the one nobody wanted.
This guide is the antidote to the “just ship it and see” mentality. We will show you how to find real, hard signals of demand before you open your code editor.
Step 1: Find the Gripes (Reddit & Communities)
People lie in surveys. They are polite when you ask them for feedback. But they do not lie when they are frustrated and complaining anonymously on Reddit.
The strongest signal for a B2B SaaS or consumer app is a recurring, specific complaint. If you want to build a tool for freelance designers, do not ask them “would you use a new invoicing tool?” Instead, search r/freelance for terms like “hate my invoicing,” “client won't pay,” or “why is X software so slow.”
The “Gripe” Framework
- Vitamins:“It would be nice if...” (Skip these)
- Painkillers:“I spent 4 hours doing X manually today and I'm losing my mind.” (Build this)
Step 2: Map the Graveyard (Competitor Analysis)
“There are no competitors” is the deadliest phrase in startups. If there are no competitors, there is likely no market.
You want to see competitors. But you want to see competitors that are old, slow, or hated (see Step 1). Go to Product Hunt and search for your core feature. Look at the products launched 2 years ago. Are they still alive? Did they pivot? Go to G2 or Capterra and read the 2-star reviews of the incumbents.
Your wedge into the market is usually hiding in the 2-star reviews of a billion-dollar company.
Step 3: Measure the Intent (Keyword Volume)
Reddit tells you if the pain exists. Keyword volume tells you if people are actively trying to solve it right now.
You don't need expensive SEO tools for this. Use free tools like Ahrefs Free Keyword Generator or Google Keyword Planner. Look for “High Intent” keywords.
- Low Intent:“what is automated invoicing” (Educational)
- High Intent:“best automated invoicing software for freelancers” (Ready to buy)
The Fast Way: Let the Robots Do It
You can spend hours manually scraping Reddit, checking Product Hunt graveyards, and analyzing SERPs. Or, you can have AI agents do it for you in 8 minutes.
That's why we built Olune. We don't ask an LLM what it thinks of your idea. We deploy specialized agents to fetch real Reddit threads, live competitor data, and actual search volumes. Then we score the idea across 7 dimensions (pain, fit, reach, willingness-to-pay, advantage, buildability, competition) and give you a defensible GO / NO-GO verdict.