Free, open-source alternative to WisperFlow and SuperWhisper.
On-device speech-to-text for macOS. Press a hotkey, talk, and your words appear wherever your cursor is. No cloud. No subscription. No data leaves your Mac.
Powered by WhisperKit — Apple's CoreML-optimized Whisper running entirely on your hardware.
This is an ad-hoc signed build. On first launch, right-click the app → Open to bypass macOS Gatekeeper.
- Completely free — no trials, no license keys, no limits
- 100% on-device — transcription runs locally via WhisperKit, nothing is sent to any server
- Menu bar app — lives in your menu bar, stays out of the way
- Global hotkeys — hold-to-record or toggle mode, fully customizable key combos
- Auto-paste — transcribed text is automatically pasted into whatever app you're using
- Multiple transcription modes — Default, Professional, Casual, Code Comment, Bullet Points
- Custom modes — create your own with prompt templates (
{{text}}placeholder) - Vocabulary & snippets — custom word replacements and text expansion
- Writing styles — apply formatting preferences to output
- Whisper model selection — choose from multiple model sizes to balance speed vs accuracy
- Press your hotkey (default: hold
Fn) - Speak
- Release — text appears in your current app
That's it.
- Download
PsstFree-x.x.x.dmgfrom Releases - Open the DMG and drag Psst Free to your Applications folder
- Launch the app — right-click → Open on first launch
- Grant the permissions it asks for:
- Accessibility — needed for global hotkeys and paste automation
- Input Monitoring — needed for capturing key events
- Microphone — needed for recording your voice
- macOS 14 (Sonoma) or later
- Apple Silicon or Intel Mac
# Clone
git clone https://github.com/dougwithseismic/psst-free.git
cd psst-free
# Build and run (debug)
swift build -c debug
./scripts/dev-build.sh --run
# Build release DMG
./build-app.sh
# Output: dist/PsstFree-x.x.x.dmgWisperFlow and SuperWhisper are great tools — but they cost money for something your Mac can do natively. Psst Free gives you the same core experience for free, with no strings attached.
MIT