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Muse vs Udderance AAC: catalog facts
Muse	Udderance AAC
Free Available through F-Droid.	Free Free and open source under AGPL-3.0-or-later.
Android, iOS	Android
Offers multiple voice options Controls pauses between words	Provides text-to-speech communication Designed to run offline
Speech synthesis uses ElevenLabs technology	Android only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-only	License: AGPL-3.0-or-later
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 8, 2026

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