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4. Version 0.7.2Jul 27, 2026

   Your voice stays on your device

   • Speaking recognition runs on your phone or computer. Your microphone audio is not uploaded; only the recognized text and a small attempt record may be sent.
   • Speaking works on more devices, because eligibility now depends on browser capability rather than graphics hardware.
   • The mock exam draws from its own question pool, separate from daily study.
   • Readings (furigana) fade out on words you keep getting right.
5. Version 0.7.1Jul 13, 2026

   Study offline, see your error patterns

   • Open Study while online and your daily pack saves itself. Lose the connection and you can keep studying; answers sync when you are back.
   • The Error Atlas on your study page summarizes repeated mix-ups and where your practice types disagree.
   • After a mock exam, see how the result compared with the model's prediction, section by section.
   • Personal decks were retired during beta; Bookmarks remain for saving items.
6. Version 0.7.0Jul 4, 2026 – Jul 7, 2026

   500 words, a mock exam, and a daily target

   • The Mind Map reached 500 vocabulary words, each with example sentences and audio.
   • A 15-minute mock exam with vocabulary, grammar, reading, and listening sections.
   • The study page shows a Today bar with a daily target you can tap to see what is planned.
   • Cards ask how confident you felt (Not yet, Getting there, Confident) instead of just right or wrong.
7. Version 0.6.1Jun 18, 2026 – Jun 24, 2026

   Speaking practice arrives

   • Say words and short sentences out loud and see whether your browser understood you. It checks understanding, not pronunciation quality.
   • Works on iPhone in Safari and on computers. A switch turns speaking off when you cannot talk out loud.
   • Speaking appears inside everyday study, with a short summary at the end of a session.
8. Version 0.5.6May 19, 2026 – May 30, 2026

   More to study and a clearer Mind Map

   • Many new example sentences with audio, and new concept groups on the Mind Map, including Food & Drink.
   • The map is brighter and easier to read, and zooming stays centered where you zoomed.
   • Placement can be paused and resumed, and Mastermind is more careful about how a single answer changes its estimates.
   • Sign-in and account protection tightened; support is available from the account menu.
9. Version 0.5.2May 14, 2026

   Focused sessions and kanji handwriting

   • Focus sessions let you drill one practice type; Adaptive sessions remain the default mix.
   • Kanji writing practice: draw supported kanji by hand, checked in your browser, with progress saved.
   • Cards, buttons, and summaries were tidied for phones, tablets, and desktops.
10. Version 0.5.1May 1, 2026

    Placement and more kinds of practice

    • A short placement check gives learners with prior exposure a realistic starting point instead of starting from zero.
    • Fill-in-the-blank practice, listening-first cards, and tap-to-build sentences join the session mix.
    • Missed or shaky items come back in later sessions, and session summaries show them clearly.
11. Version 0.5.0Apr 1, 2026 – Apr 17, 2026

    Mastermind opens for beta

    • Real learners can sign in, study, and send feedback for the first time.
    • Bookmarks let you save sentences, words, and kanji for later.
    • A cleaner Mind Map, faster example sentences, and better recovery when a session is interrupted.
12. Version 0.4.0Early developmentMar 12, 2026

    Verb Focus and Kanji Foundations

    • Two new modes: study verbs on their own, or kanji on their own.
    • Simpler, faster menus on phones.
13. Version 0.3.2Early developmentFeb 27, 2026 – Feb 28, 2026

    Study slows down when you need it

    • After several misses, Mastermind pauses new material so you can catch up before more arrives.
    • You can attach a screenshot when sending feedback.
14. Version 0.3.0Early developmentDec 21, 2025

    Questions start adapting to your answers

    • Mastermind records how each answer went and uses that history to choose the next question.
    • The first N5 knowledge graph is in place behind the study loop.
15. Version 0.2.0Early developmentMay 15, 2025 – Oct 5, 2025

    First lessons and email sign-in

    • The first Japanese practice with real N5 questions.
    • Sign in with a link sent to your email, no password needed.