Decide which idea is worth building.
WhittleOS scores your startup ideas for solo-founder fit — BUILD, VALIDATE, or KILL, with the reasons. No calls, no coaching. Just a verdict you can act on.
Free plan — one idea check, no card required.
Recurring buyer and a reachable channel, but distribution is unproven — worth a cheap async test before building.
Next move
Stand up a paid-preorder landing page; run async outreach in two communities.
How it works
Bring an idea — or none
Describe one idea in four fields, or sweep a whole niche and let the pipeline source candidates for you.
We score it for solo fit
Kill-filters + seven weighted categories judge what one person can realistically build, sell, and support.
Get a verdict you can act on
BUILD / VALIDATE / KILL with the reasons, the biggest unknown, and the one next move — or an honest KILL.
Why it's different
Built for solo founders
Not VC-scale playbooks. Scored on distribution, support load, and pricing power a single person can actually carry.
Kill-biased by design
Most ideas should die early. We tell you which — and why — so you don't burn months. Killed ideas rest in a graveyard.
No calls, ever
Validation plans are async: a landing page + a real CTA, not customer interviews. The whole product is no-call.
What you can do
Discover
Full-pipeline sweep of a niche → ranked finalists.
Check one idea
A single BUILD / VALIDATE / KILL verdict with reasons.
Compare
Rank several ideas against your situation.
Validate
A 1–2 week async validation plan + stop-loss.
Scope the MVP
Turn a validated idea into a narrow v0.1 build.
Kill My Idea
A deliberately adversarial teardown before you commit.
Stop building the wrong thing.
Get an honest verdict on your next idea in minutes — saying no early is the whole point.