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Supertonic TTS

Supertonic TTS is a free, open-source utility app for Android. Local AI Text-to-Speech using Supertonic ONNX. It has 111 GitHub stars and is released under the GPL-3.0-only license, and you can install it from F-Droid and Google Play.

github.com/DevGitPit/supertonic-android (opens in a new tab)

Data as of from the GitHub API and the F-Droid index; description from the project's repository or F-Droid listing. Report an error

Get it on F-Droid (opens in a new tab)Google Play (opens in a new tab)View on GitHub (opens in a new tab)

About Supertonic TTS

Supertonic TTS is a high-performance, on-device text-to-speech (TTS) system for Android. It uses Supertonic ONNX models to provide high-quality speech synthesis entirely offline, ensuring privacy and availability without an internet connection. Key Features: - Offline Inference: Runs entirely on-device using ONNX Runtime. - System Integration: Standard Android TTS provider, usable in any app. - Native Rust Core: High-performance inference powered by a native Rust backend. - Material Design 3: A modern and clean user interface built with Jetpack Compose. - Audio Export: Save synthesized speech as WAV files. - Lexicon Management: Define custom pronunciation rules for specific terms.

Privacy and F-Droid

F-Droid builds Supertonic TTS from its published source code and flags anti-features such as ads, tracking or reliance on non-free services.

  • Relies on a non-free network service

Screenshots

  • Supertonic TTS screenshot 1
  • Supertonic TTS screenshot 2
  • Supertonic TTS screenshot 3

Screenshots from the app's F-Droid listing.

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FAQ

Supertonic TTS FAQ

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Is Supertonic TTS free and open source?

Yes. Supertonic TTS's source code is public on GitHub under the GPL-3.0-only license, which is OSI-approved or FSF-free. F-Droid flags these anti-features on its latest build: relies on a non-free network service.

How do I install Supertonic TTS?

You can install Supertonic TTS from F-Droid (package com.brahmadeo.supertonic.tts) and from Google Play; the links are on this page. Its GitHub repository also publishes releases (latest: v3.3.1).

Is Supertonic TTS still maintained?

The repository's most recent commit was on Oct 14, 2026. Its F-Droid listing was last updated on Oct 16, 2026. appsgit only lists apps whose repository had a commit in the last six months.