About Otoha
A quiet player for people who want to really listen.
Otoha is developed by ChainBow Co., Ltd. in Tokyo, Japan. We bring personal music, study audio, subtitles, and AI into one native player without requiring an account or interrupting playback with ads.
Developer and operator
ChainBow Co., Ltd.
Based in
Tokyo, Japan
Platforms
iPhone, iPad, and Mac
What we build
Otoha connects local and iCloud files, Apple Music, podcasts, Suno, and public live sources the user may access, then adds subtitles, repeat listening, explanations, follow-ups, and AI DJ. Otoha does not own the Apple Music catalog or live channel content.
Why there is no account or advertising
A player should work first. Core playback needs no account and is not funded by ads. Cloud AI, Premium, and macOS Lifetime are optional upgrades for stronger AI, online directories, themes, Stage, and tuning.
AI and data boundaries
Playback, library data, and stats are managed by the app on the device. Device AI is provided by the current system. When Cloud AI is used, the app sends the text or context needed for the selected request. See the privacy policy and in-app disclosure for details.