ホイッスルトレーナー

This is a practice app for tin whistle (D whistle).
For each note in the sheet music, a fingering diagram for 6 holes appears, and the app judges the sound you blow into the microphone against the model performance. When you miss a note, it tells you in words what went wrong and how.
Individual differences in whistles can be corrected by blowing just one low D note, and songs can be added through ABC notation pasting, searching from thesession.org, or transcription from audio sources.
※Audio transcription has low accuracy.

No ads, no registration required, and recorded audio does not leave your device.
The developer bought a tin whistle but couldn't play it at all, so they dove into developing an easy-to-use practice app. Now they're playing it energetically.