Prontafon

Open-source speech prompting

Your Voice. Typed.

Speak on your Android phone. Prontafon types into whatever is focused on your Linux desktop. Encrypted Bluetooth Low Energy.

Download Desktop (Linux) View on GitHub
BLE AES-256-GCM Works everywhere

Latest: v0.3.0 · 2026-02-16

How it works

  1. Start the desktop app (tray icon) on Linux.
  2. Install the Android app and grant microphone + Bluetooth/Nearby devices permissions.
  3. Scan & connect from Android, then accept pairing on desktop.
  4. Place your cursor anywhere, tap the mic button, and speak.

Voice commands

Say these while dictating to control the focused app:

SayAction
enterPress Enter
select allCtrl+A
copyCtrl+C
pasteCtrl+V
cutCtrl+X
cancelDiscard pending text

What you need

  • Android 13+ phone with BLE + microphone
  • Linux desktop with BLE (BlueZ), X11 or Wayland (ydotool for Wayland)
  • Active network connection required on the phone

Downloads

Desktop (Linux)

Grab the latest packaged build from GitHub Releases.

All releases
Download (recommended)

If the direct buttons don’t appear (rate limit/offline), use “All releases”.

Changelog

Full changelog

0.3.0 · 2026-02-16

  • Dim screen button on HomeScreen that dims entire display to save battery.
  • Debug logging for checksum verification and crypto key derivation (Rust and Kotlin).
  • Fixed word duplication caused by handleFinalResult sending words already sent via partial results.
  • Fixed false new-utterance detection on capitalization changes by making comparisons case-insensitive.
  • Removed SpeechService foreground service and all background listening functionality.
  • Removed 5 permissions: FOREGROUND_SERVICE, FOREGROUND_SERVICE_CONNECTED_DEVICE, FOREGROUND_SERVICE_MICROPHONE, POST_NOTIFICATIONS, WAKE_LOCK.

0.2.0 · 2026-02-16

  • Comprehensive code review and quality improvements.
  • Enhanced screen dim functionality with full display coverage.
  • Improved Bluetooth and audio handling.
  • Fixed 55 code quality and reliability issues.
  • Improved dim screen to cover entire display including top bar and status bar.
  • Email normalization to development@prontafon.com across all files.
  • Various bug fixes and stability improvements.
  • Removed: Background/wake lock functionality (replaced with dim screen button).

0.1.0 · 2026-02-14

  • Fresh Start - Repository Cleanup & Version Reset.
  • Initial release of the native Android (Kotlin) and Desktop (Rust) implementation.
  • BLE-based communication with AES-256-GCM encryption.
  • Voice-to-keyboard dictation and basic voice commands.