Keyu: Live Lecture Captions
Live-translated class captions
About
This app provides live, on-device captions and translations for lectures and talks. It works offline after initial setup, allowing students and attendees to easily follow along in their preferred languages. Sessions are automatically saved for later review and export.
What's New in Keyu
1.1
September 27, 2026
- iPad: native full screen, Split View, Slide Over, and Stage Manager support; text size and layout adapted for larger displays; external keyboard shortcuts — ⌘R start, ⌘P pause or resume, ⌘. stop - Languages: the interface is now available in 14 languages; languages can be chosen during first-launch setup; the default translation language follows the device language - Display: three text sizes; switch between original and translation, original only, or translation only - Copy and share: long-press a line to copy or share it, or copy the full text; PDF export added, alongside TXT, SRT, and Markdown; recordings export as m4a - More: translation color is clearer and easier to read; captions return to the latest line after changing text size or display mode; exported files are named after the class; unsupported older devices get a clear notice; stability fixes
MoreFAQ
What languages does Keyu support for recognition and translation?
Keyu supports recognition in English, Chinese, Japanese, Korean, Spanish, French, German, Italian, and Portuguese. Translation is available in approximately 20 languages, typically following your device's language. The app interface itself is available in 14 languages.
Does Keyu work offline?
Yes, after an initial guided setup to download necessary system components and grant permissions, Keyu works entirely offline. This means you can use it for lectures without an internet connection.
How are lecture sessions saved and what can I do with them?
Each class session is automatically saved within the app. You can search and review the full bilingual text of your lectures. Individual lines can be copied or shared, and the entire session can be exported in formats like TXT, SRT, Markdown, or PDF.
What are the system requirements for Keyu?
Keyu requires iOS 16 or iPadOS 16 or later. It is designed to work on both iPhone and iPad devices, with native support for iPad features like Split View and Stage Manager.
Can Keyu handle noisy environments or strong accents?
While Keyu strives for accuracy, external factors like noise, distance from the speaker, or strong accents may cause recognition errors. An orange status dot indicates that sound is detected but temporarily not recognized.
How does Keyu protect user privacy?
Keyu is designed with privacy in mind, with recognition, translation, and recording all happening on the device. Core features do not require a server connection, and class content is not uploaded. The only network component is an optional diagnostic log upload.
What is the user sentiment for Keyu?
Based on the available data, Keyu has received a perfect 5.0-star rating from 2 user reviews, indicating a very positive initial reception.
How often is Keyu updated?
The latest version, 1.1, was released on September 27, 2026, indicating recent development activity. The app was initially released on September 25, 2026.