KotenOCR
Satoru Nakamura Reference iPhoneiPadiPod touch
KotenOCR is a free Reference app for iPhone and iPad by Satoru Nakamura. Rated 3.7/5 from 3 ratings. Requires iOS 16.0. Updated March 27, 2026.
- Rating
- 3.7
- 3 ratings
- Price
- Free
- on the App Store
- Size
- 247 MB
- Age 4+
- Updated
- Mar 27
- 2026 · v1.3.5
Screenshots
About KotenOCR
An OCR app that reads classical Japanese cursive script (kuzushiji) using AI. Features: - Just take a photo to convert kuzushiji to text - Powered by the National Diet Library's AI model (NDL Koten OCR-Lite) - All processing runs on-device (no internet connection required) - Copy and share recognized text How to Use: 1. Capture a page with the camera or select from your photo library 2. AI automatically detects text regions and recognizes kuzushiji 3. Tap results to review, copy and use Supports over 7,000 kanji, hiragana, and katakana characters. Optimized for Edo-period woodblock prints and manuscripts. Licenses: - OCR Model: NDL Koten OCR-Lite (National Diet Library, CC-BY-4.0) - Inference Engine: ONNX Runtime (Microsoft, MIT License) Source code: https://github.com/nakamura196/koten-ocr-ios
What’s new
Version 1.3.5 · Updated March 27, 2026
Improved local AI status messages. Now shows specific guidance when Apple Intelligence is not enabled or model is still downloading.
App privacy
The developer, Satoru Nakamura, reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| KotenOCR | 3.7 / 5 (3 ratings) | Free | March 27, 2026 | |
| Yoki-Kana | – | Free | Oct 8, 2025 | Compare |
| じせデジリーダー | – | Free | Feb 19, 2025 | Compare |
| くずし字学習支援アプリKuLA | 4.6 / 5 (13) | Free | Apr 19, 2024 | Compare |
| 古典翻訳 ~カメラから漢文翻訳・古文翻訳できるアプリ~ | – | Free | Jan 24, 2026 | Compare |
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