Productivity
NapkinBook
Last updated 2026-08-15 · benchmark measured 2026-08-15 — deterministic & reproducible
NapkinBook is a computational whiteboard for making and defending data-driven probability estimates.
Is NapkinBook production-ready?
Legit.Show scores NapkinBook 92 out of 100 — the simple average of its 5 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on NapkinBook (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Privacy; its weakest is Security. 5 of the seven frames returned a score; Performance and Accessibility were not measurable on this service and are recorded as null — not as zero. Every frame it averages is published with its evidence on the Legit.Show listing.
The 7 Frames
- Performance — not measurable on this service (null — not scored as 0)
- Accessibility — not measurable on this service (null — not scored as 0)
- Security — 60/100
- Privacy — 100/100
- Reliability — 100/100
- Standards — 100/100
- Discoverability — 100/100
What we measured
- Security headers present: CSP, X-Frame-Options.
- No HSTS.
- Served over HTTPS with a valid certificate.
- Real Lighthouse performance run — 138 ms to first byte.
- Returns a proper 404 for unknown routes.
- 3 of 3 sampled routes reachable.
- Has a reachable privacy policy.
- Sets cookies / loads scripts with no consent prompt.
Who it's for
Forecasters · Data analysts · Decision makers · Teams doing quantitative analysis · Superforecasters
Pricing
Free
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