Free Startup Tools
Quick, honest tools to pressure-test your idea and your numbers before you build. Free, no signup, no AI fluff. Just straight answers.
Validate the idea
Before you build, pressure-test the idea itself.
Idea Validation Checklist
Tick off the validation work you have done and get an instant readiness grade from A to F, plus an honest verdict on whether you are ready to build.
Startup Idea Scorer
Rate your idea across 7 dimensions and get an instant GO / NO-GO verdict, based on the Painkiller vs Vitamin framework.
Mom Test Question Generator
Generate a customer interview script that gets honest answers. Past-behaviour questions based on The Mom Test, plus the leading questions you should never ask.
Run the numbers
Once the idea holds up, check whether the math does too.
Runway & Burn Rate Calculator
Work out how many months of cash you have, then find out if you are default alive or default dead based on your growth. Not just a number, a verdict.
LTV:CAC Calculator
Do you make back more than it costs to win a customer? Get your lifetime value, LTV:CAC ratio, and payback, with a pass/fail verdict on the 3:1 rule.
Startup Cost Calculator
Add up what it really costs to reach launch, one-time plus monthly, and find out if your budget covers it with room to spare.
Market Size Calculator
Calculate your TAM, SAM, and SOM to see if your market is large enough to sustain a venture-scale business.
Questions about the tools
Are these tools really free?
Yes. Every tool here is free, with no signup and no card. They run entirely in your browser, so there is nothing to install and nothing to pay for.
Do they use AI?
No. These are deterministic calculators and scorers built on clear frameworks and math. You get the same honest answer every time, instantly, with no AI guesswork. The full Olune validation does use search data and an LLM, but these quick tools do not.
What is the difference between these tools and the full Olune validation?
The tools are quick self-assessments you run on your own inputs. The full Olune validation goes further: it pulls public Reddit complaints, competitor data, and real search demand to give a verdict on your specific idea.
Want the full picture?
These tools run on your own inputs. Olune runs your idea against public Reddit threads, competitor data, and real search demand, then gives you an honest verdict.
Validate your idea →