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SoundTree Recorder vs Audio Recorder: catalog facts
SoundTree Recorder	Audio Recorder
Free Free and open source under the GPL-3.0 licence.	Free Free and open source under the Apache 2.0 licence.
Android	Android
Hierarchical topic tree for organizing recordings Bookmarks for marking moments in a recording	Optimized for a fast start Choice of M4A (AAC) or WAV recording
Android only No cloud sync or backup built in	Android only Some features such as Bluetooth mic support are still on the roadmap
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-only	License: Apache-2.0
No account needed	Not stated if an account is needed
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 2, 2026

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