追加の音もほしい
何回か音を聞き直すと、途切れたり、少ししかならなかったりするので修正お願いします
有料でもいいのでピアノの音を追加してほしいです
Response from developer
練習に使っていただき、ありがとうございます。聞き直すと音が途切れたり短くなったりするとのこと、ご不便をおかけして申し訳ありません。再生の不具合を修正し、ピアノ音の追加にも対応します。

This app offers a quiz-style game to help you identify musical notes by ear. Improve your pitch recognition through practice with adjustable difficulty levels and track your progress over time. It's designed to enhance your musical understanding and ear training.
1.0.2
July 13, 2026
Thank you for using our app. - Now available in 17 languages, including note names in your language - Minor bug fixes and improvements
More練習に使っていただき、ありがとうございます。聞き直すと音が途切れたり短くなったりするとのこと、ご不便をおかけして申し訳ありません。再生の不具合を修正し、ピアノ音の追加にも対応します。
Onkan is a quiz-style music app designed to help users improve their ability to identify musical notes by ear. It offers various difficulty levels and features to track progress.
By repeatedly listening to tones and selecting the correct note name, users can steadily sharpen their pitch recognition skills. The app provides immediate feedback and tracks performance over time.
Onkan features three difficulty levels: Easy (7 white keys), Normal (all 12 notes with sharps and flats), and Hard (24 notes across two octaves). Users can progress at their own pace.
Yes, Onkan allows you to track your score history over time. It also features a five-tier ranking system, from AbsolutePitch to Novice, based on accuracy and response speed.
Yes, Onkan contains advertisements. As a free application, ads are displayed to support its continued development and availability.
Currently, Onkan is supported on iPhone devices. Future platform expansions may be considered based on user demand and development resources.
The latest version of Onkan is 1.0.2, last updated on July 13, 2026. Updates typically address bug fixes, performance improvements, and potential new features.
Yes, Onkan is suitable for beginners with its Easy difficulty setting focusing on white keys. It's designed to help anyone, regardless of their current musical knowledge, develop their ear.