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Supertonic TTSSmartVoice
Free

Free and open source under the GPL-3.0 licence.

 Free

Free and open source under the MIT license.

Android Android
  • Speech synthesis runs entirely on the device
  • Works offline
  • Automatic language recognition and voice switching
  • Adjustable volume, speech rate, and pitch for each voice
  • Android only
  • Limited to the voices available as Supertonic models
  • Requires Android 7.0 or later
  • Automatic language recognition supports only a subset of languages
Downloadable app Downloadable app
Open source Open source
License: GPL-3.0-only License: MIT
No account needed Not stated if an account is needed
Works offline Not stated if it works offline

Checked October 2, 2026

Checked October 8, 2026

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