yomion is built by one person who got tired of juggling apps

Why it exists

Most learners end up with a typing trainer, a flashcard app, a kanji reference, and maybe a conversation partner — each with its own login, its own database of what you know, and its own subscription. yomionis one app that does all of it: read and type, flip cards on a modern spaced-repetition engine (FSRS, Anki's own new default, plus full SM-2 for Anki purists), study kanji with stroke order, and — for subscribers — practice with an AI tutor that role-plays real scenarios.

The name is two Japanese roots: yomu (“to read”) and on(“sound”) — read it, hear it, say it.

What we believe

• Free, genuinely, forever. The no-account path covers everything except AI: typing, flashcards, SRS, gamification, and kanji all work offline in your browser. A paid tier exists for people who want every JLPT level, cloud sync, and the AI features — not as a paywall on the basics.
• You own your data. Export your decks to CSV at any time. Anki import (CSV free, .apkg on Plus) and export mean no lock-in.
• Calm, not loud. Learning should feel good. Every correct answer rewards; every mistake teaches, never shames.
• Honest about AI. Lessons, explanations, and scenarios are AI-assisted and human-reviewed. They can still be wrong — treat them as a helpful tutor, not an accredited teacher.

How the content is made

The numbers on the homepage — roughly 310 grammar lessons across JLPT N5–N1, a curated word bank of about 28,000 entries, and 2,000+ kanji with stroke order — describe the size of the curriculum, not learner outcomes. Here is honestly how that content is produced and checked:

• Grammar lessons are structured reference units covering particles, verb forms, conditionals, keigo, and idioms, organized to the five JLPT levels. Examples carry real <ruby> furigana so the reading is correct, not guessed.
• Vocabulary is drawn from a sourced word bank and enriched with readings, meanings, and JLPT level. Homonyms (e.g. the several words read atsui) are kept distinct rather than collapsed.
• AI-assisted, human-reviewed.Explanations and scenarios are generated with an LLM and then reviewed before publishing. They can still be wrong — the “Honest about AI” principle above applies. Treat the app as a helpful tutor, not an accredited teacher, and cross-check anything that matters for an exam.
• Spaced repetition is FSRS + SM-2.FSRS is Anki's modern default and personalizes review intervals to your own forgetting curve; SM-2 is kept for learners who want the classic Anki schedule. You can switch between them and export your decks at any time.

We don't yet publish learner-count or pass-rate metrics — yomion is young, and we'd rather under-claim than invent a number. As real outcome data accumulates, it will appear here with the methodology behind it.