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SmartVoiceSupertonic TTS
Free

Free and open source under the MIT license.

 Free

Free and open source under the GPL-3.0 licence.

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

Checked October 8, 2026

Checked October 2, 2026

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