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Chronal vs Diatronome: catalog facts
Chronal	Diatronome
Free Free and open source, with no ads.	Free Free and open source under GPL-3.0-or-later.
Android	Android
Notation editor for hearing written rhythms Two synchronised metronomes for polyrhythms	Combines a tuner, metronome and synthesizer Supports adjustable pitch and transposition
Android only Licence information differs between the repository and the F-Droid listing	Android only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-3.0-or-later
No account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 8, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.