- A real instrument. For piano, a piano, a digital piano or a keyboard works: tonestro listens through your device's microphone, without a MIDI connection.
- An iPhone or iPad with iOS 15 or newer, or an Android phone with Android 8 or newer and at least 4 GB of memory (RAM). Piano and guitar run on iPhone and iPad.
- No offline mode: tonestro needs a stable internet connection.
- Headphones when you play along with backing music. Wired ones work best.
- Not supported: digital wind instruments (EWI), MIDI, audio interfaces, external microphones and practice mutes that silence your instrument.
Still choosing a piano? Keyboard, digital piano or acoustic piano: what fits a beginner.
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