Before you build it, see what you're assuming.
Paste an idea, answer four product questions, and get a Preflight Check with your riskiest assumption and a 24–48h validation experiment.
Built for people shipping with
Preflight does not validate your idea. It shows what you need to validate before building.
Paste your product idea
Describe what you're about to build in plain language.
Answer 4 product questions
Who's it for, what do they do today, what moment hurts most.
Get your Preflight Check
A score, your riskiest assumption, and a 24–48h experiment to run.
Sample Preflight Check output
Preflight Score
Riskiest Assumption
AI builders will stop to run a structured check instead of opening Cursor and building immediately.
24–48h Validation Experiment
Share Preflight with 10 builders mid-idea; count how many run a check before writing code.
Not an idea validator
Preflight will not tell you your idea is good or bad. It shows what still needs evidence before you build.