Free tools
The checks your idea has to survive
No signup, no email gate — the same checks and sourced evidence the WhittleOS decision engine runs, the parts that kill most solo-founder ideas before you waste months on them.
Pain Receipts
Type a niche and see the real, source-linked customer pains our discovery sweeps have already mined — evidence before you build, not a feel-good score.
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Customers-needed calculator
How many paying customers does your price point require to hit $5K-$50K MRR? The pricing-reality check most ideas fail.
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Support burden calculator
Turn minutes-per-customer into hours-per-week and see whether support stays background noise — or becomes the job.
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Want the full picture — pain evidence, distribution fit, kill filters, a verdict? See a real report or sign up and use your 2 free credits on a real check.