Origa 「オリガ」
July 24, 2026 · View on GitHub
Learn Japanese without an English middleman.
オリガ is a comprehensive app for learning Japanese and focused preparation for the JLPT exam.
Spaced repetition algorithms (FSRS), built-in OCR, text and audio recognition — AI processing runs locally on your device. An internet connection is needed only for the first sign-in and the initial content download.
🎯 Principles
- Learn from your own content — you choose what to study. The app adapts to what you already know and what you're reading, watching, or listening to right now.
- Smart algorithms — FSRS spaced repetition system (like Anki) optimizes review intervals for each word.
- Privacy — all AI models run locally on your device. Your photos, audio, and study activity are processed on-device and never uploaded.
- Offline-first — full functionality without internet after the initial setup.
- Cross-platform — Web, Windows, Linux, macOS, Android.
- Learn in your language — interface and dictionaries in Russian and English (more languages planned).
- JLPT analytics — track your current level and forecast your progress.
✨ Features
Vocabulary
- Built-in dictionaries in your native language.
- Ultra-fast card creation — just type a word or sentence in Japanese.
- Automatic recognition and extraction of vocabulary from text, photos, and audio.
- Import ready-made word sets from other popular apps and classic textbooks.
- Built-in audio bank with correct pronunciation (based on NHK and other reliable sources).
Kanji
- Automatic furigana generation for all study content.
- Smart hiding: learned kanji no longer show furigana, training your reading skills.
- Proper kanji writing trainer.
- Built-in kanji dictionaries strictly mapped to JLPT levels.
- Interactive kanji reading tests.
Grammar
- Built-in structured grammar reference mapped to JLPT levels.
- Contextual learning: grammar rules are explained using words you've already learned.
- Practical tests to reinforce grammar patterns.
Phrases & Listening
- Built-in database of 200,000+ phrases from native Japanese content (visual novels, anime) with original voice acting.
- Automatic phrase selection for lessons based on your current vocabulary (N+1 approach).
- Listening and speech comprehension practice.
- Immersion in conversational and everyday Japanese.
📥 Download
| Platform | Status | Format |
|---|---|---|
| Windows | ✅ Ready | .exe, .msi |
| Linux | ✅ Ready | .deb, .AppImage, .rpm |
| macOS | ✅ Ready | .dmg, .app |
| Android | ✅ Ready | .apk |
All versions support offline mode.
A web version is also available.
🌍 Interface Languages
| Languages | Status |
|---|---|
| Russian, English | ✅ Available |
| Vietnamese, Korean | 📋 Planned |
| Indonesian, Spanish | 📋 Planned |
🏗️ Architecture & Technologies
The project is built on a modern stack that delivers native app performance with web interface flexibility.
- Core & backend: Rust — safety and high-speed data processing.
- Desktop wrapper: Tauri v2 — native apps for Windows, macOS, and Linux.
- Frontend: Leptos — reactive UI framework in Rust (WebAssembly) for instant interface response.
- Mobile: Native Android build via Tauri Mobile.
🚀 Roadmap
- Mobile platforms: iOS release.
- Social features: competitions between users.
- New exercise types: reading texts, manga, contextual sentences, audio, video.
- Localization: add Vietnamese, Korean, Indonesian, and Spanish.
📊 Comparison with Other Apps
How Origa compares to popular tools and how you can use them together.
Anki
A powerful and flexible spaced repetition app for any material.
- When to use Anki: you need absolute customization freedom, custom HTML/CSS cards, or you're studying many subjects beyond Japanese.
- Origa's advantage: save time creating cards, quickly load your content, with vocabulary + kanji + grammar in a single ecosystem.
ReWord
A flashcard-based vocabulary memorization app.
- When to use ReWord: quick start and mechanical memorization of basic word lists without context.
- Origa's advantage: vocabulary is tied to your content, grammar, and native audio — giving you a deeper understanding of the language.
Bunpro
A specialized grammar trainer (Grammar SRS).
- When to use Bunpro: you want to focus exclusively on drilling grammar rules.
- Origa's advantage: grammar examples are built on words you've already learned — vocabulary and grammar work as a unified whole.
WaniKani
A popular kanji and vocabulary learning service using mnemonics.
- When to use WaniKani: a rigid order of learning kanji by radicals from scratch works for you.
- Origa's advantage: you learn exactly the kanji and words you encountered today — in manga, an article, or at work.
Duolingo
An engaging app that gradually immerses you in a language.
- Pair with Origa: use Duolingo for an easy start and initial vocabulary and kanji base. Origa will reinforce that material, fill grammar gaps, and transition knowledge from a gamified form into practical use.
Migii
A serious JLPT test preparation simulator.
- Pair with Origa: use Migii to practice solving exam tests against the clock. Origa serves as your foundation to comprehensively collect and reinforce all the material needed to pass those tests.
📄 License
This project is distributed under the BSL 1.1 (Business Source License 1.1).
What this means:
- ✅ You may freely use, study, and modify the code for personal purposes.
- ✅ You may build the app for yourself.
- ❌ Using the code to provide public commercial services (SaaS) or reselling it is prohibited without explicit agreement from the authors.
After a certain period (or when conditions are met), the license may convert to a more open one (e.g., Apache 2.0 or MIT).
See the LICENSE file for details.
📬 Contacts
- GitHub Issues: for bug reports and feature requests.
- Discussions: for general questions and idea discussions.
- Made with love for the Japanese language and technology.