OpenKoto
用喜欢的内容学语言
About
Learn languages using your favorite content like articles, books, and videos. Understand sentences in context, collect vocabulary, and review it on a schedule. This privacy-first app offers on-device subtitle generation and reading aids.
What's New in OpenKoto
0.6.1
August 26, 2026
• Word lookups are now saved — no need to look up the same word again after restarting • New 3-step import wizard: choose a type, add your content, confirm and done • New guide for downloading and importing videos with subtitles
MoreFAQ
What languages can I learn with OpenKoto?
OpenKoto can be used in English, Simplified Chinese, or Japanese. The app focuses on helping you learn languages by importing content in those languages, with features like furigana and pinyin generation for Japanese and Chinese text.
How does OpenKoto handle privacy?
OpenKoto is a privacy-first app with no account required. All learning content and progress stay on your device. Optional AI features use a bring-your-own-key model, with API keys stored securely in the iOS Keychain.
Can I use OpenKoto offline?
Yes, the core features of OpenKoto, including reading, vocabulary collection, and review, work without an internet connection or configuring an AI provider. Sample articles are included for immediate use.
What kind of content can I import into OpenKoto?
You can import text, TXT, Markdown, and web content. It also supports importing EPUB books with automatic chapter splitting and video/audio with SRT/VTT subtitles.
Does OpenKoto have ads?
No, OpenKoto is free and open source and does not contain advertisements. It is designed to provide an uninterrupted learning experience.
What devices is OpenKoto available on?
OpenKoto is available on Mac, iPhone, and iPad, allowing you to learn across multiple Apple devices.
How often is OpenKoto updated?
The latest version of OpenKoto is 0.6.1, and it was last updated on August 26, 2026. This indicates a commitment to ongoing development and improvements.
What is the age rating for OpenKoto?
OpenKoto has an age rating of 4+, making it suitable for a wide range of users interested in language learning.
