バージョンアップを期待！
文字と絵が区別出来てない。キラなどデザインされた紙などに書かれている場合、それも認識してくれたらと思います。
Response from developer
レビューありがとうございます。本アプリは国立国会図書館の「NDL古典籍OCR-Lite」モデルを利用しており、装飾紙（金箔・模様入りの料紙など）上の文字認識はモデルの特性上、精度が下がる場合がございます。いただいたご意見は今後の改善の参考にさせていただきます。
Free
In-App Purchases
About
This application uses AI to convert classical Japanese cursive script (kuzushiji) into digital text. Simply take a photo of the script, and the app will automatically recognize and convert it. All processing is done on-device, supporting over 7,000 characters and optimized for historical documents.
✓Photo to text conversion
✓AI-powered kuzushiji recognition
✓On-device processing
✓Copy and share text
✓Supports 7,000+ characters
✓Optimized for historical documents
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What's New in KotenOCR
1.3.5
March 27, 2026
Improved local AI status messages. Now shows specific guidance when Apple Intelligence is not enabled or model is still downloading.
3
In-App Purchases
$0.99
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FAQ
What is KotenOCR?
KotenOCR is an application that uses artificial intelligence to recognize and convert classical Japanese cursive script (kuzushiji) into digital text. It allows users to take a photo of the script and have it converted.
Does KotenOCR require an internet connection?
No, all processing for KotenOCR runs on-device. This means you do not need an internet connection to convert kuzushiji to text, ensuring privacy and accessibility.
What kind of Japanese script does KotenOCR support?
KotenOCR is specifically designed to recognize classical Japanese cursive script, known as kuzushiji. It supports over 7,000 kanji, hiragana, and katakana characters, with optimization for Edo-period woodblock prints and manuscripts.
What is the AI model used by KotenOCR?
KotenOCR is powered by the National Diet Library's AI model, NDL Koten OCR-Lite. This model is licensed under CC-BY-4.0.
Is KotenOCR free to use?
Yes, KotenOCR is free to download and use. The application may offer in-app purchases for additional features or content.
What devices is KotenOCR available on?
KotenOCR is available for iPhone and iPad devices. It is designed to work on these Apple mobile platforms.
How often is KotenOCR updated?
The latest version of KotenOCR is 1.3.5, last updated on March 27, 2026. Updates typically include improvements to recognition accuracy, bug fixes, and feature enhancements.
What is the age rating for KotenOCR?
KotenOCR has an age rating of 4+. This indicates it is suitable for users of all ages, with no content restrictions.