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Audio Recorder vs QSO Again: catalog facts
Audio Recorder	QSO Again
Free Free and open source under the Apache 2.0 licence.	Free Free and open source under GPL-3.0.
Android	Android
Optimized for a fast start Choice of M4A (AAC) or WAV recording	Records and plays back radio conversations Audioloop keeps audio in RAM
Android only Some features such as Bluetooth mic support are still on the roadmap	Android only
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: GPL-3.0
Not stated if an account is 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.