Education & Reference

Mainichi

Last updated 2026-07-18 · benchmark measured 2026-08-12 — deterministic & reproducible

Mainichi is a Japanese vocabulary app using SRS flashcards and a prefecture-based journey.

Is Mainichi production-ready?

Legit.Show scores Mainichi 83 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on Mainichi (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Reliability; its weakest is Privacy. Every frame it averages is published with its evidence on the Legit.Show listing.

The 7 Frames

• Performance — 80/100
• Accessibility — 96/100
• Security — 80/100
• Privacy — 25/100
• Reliability — 100/100
• Standards — 100/100
• Discoverability — 100/100

What we measured

• Security headers present: HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy.
• No Content-Security-Policy.
• Served over HTTPS with a valid certificate.
• Real Lighthouse performance run — 936 ms to first byte.
• Returns a proper 404 for unknown routes.
• 3 of 3 sampled routes reachable.
• No privacy policy found.
• Sets cookies / loads scripts with no consent prompt.

Who built it

Michał Paczyński

Who it's for

Japanese learners · Language students · Mobile learners · JLPT prep students · Casual learners

Pricing

Free download available; Premium and Lifetime tiers mentioned but specific pricing not stated

Visit Mainichi → · Alternatives to Mainichi → · How this was measured →