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SherpaTTS vs RHVoice: catalog facts
SherpaTTSRHVoice
Free

Free and open source under the GPL 3.0 licence.

Free

Free and open source.

Android Linux, Android
  • Speech is generated on the device
  • Internet needed only to download the voice model
  • Runs locally without a network connection
  • Lightweight statistical parametric synthesis
  • Developer says it will stop working on certified Android devices after Google's identity requirement
  • Voice quality depends on the model you pick
  • Sounds less natural than neural text-to-speech
  • Language and voice coverage is limited compared with commercial engines
Downloadable app Downloadable app
Open source Open source
License: GPL-3.0 License not stated
No account needed No account needed
Works offline Works offline

Checked October 2, 2026

Checked September 26, 2026

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