Structured lessons, a real dictionary, spaced-repetition flashcards, and a conversation partner that only speaks the Japanese you have actually learned. One focused app, built by one person, with no streaks engineered to guilt you back in.
Most learners end up juggling a textbook app, a dictionary, a flashcard app, and something for speaking practice — none of which know anything about each other. Gogaku puts all four under one roof and gives them a shared memory of what you've studied.
Twenty-five lessons from absolute beginner upward. Grammar, vocabulary, and dialogue, built progressively so each lesson stands on the one before it.
Nearly 10,000 entries with full conjugation tables, JLPT levels, example sentences, and kanji breakdowns by radical. Search anything, instantly.
Spaced repetition that follows the SM-2 schedule. Build decks from lesson vocabulary or anything you look up, and review on the interval your memory actually needs.
Tomodachi holds a real conversation with you in Japanese — and stays strictly inside the words and grammar you've covered. Long-press any word for a translation. Furigana on demand.
Drop most language chatbots into a beginner conversation and they answer in fluent, natural Japanese you have no way to parse. Tomodachi works from your actual vocabulary list — the words from lessons you've finished and decks you've built — and won't reach past it. When it does introduce something new, it tells you, and the word goes into your deck rather than sailing by. That constraint is the whole point, and it's the part that took the longest to build.
Screenshots are coming as the app moves into beta.
Gogaku launches on the App Store soon. This link goes live the day it ships.
⬇ Download on the App Store Link Activates at Launch