MumbleFlow
Fully local speech-to-text with sub-second offline transcription
Overview
MumbleFlow is a privacy-focused speech-to-text desktop app that runs entirely on your device. Powered by whisper.cpp with Metal/CUDA hardware acceleration, it delivers sub-second transcription without any cloud dependency. Press a hotkey to record, speak naturally, and your words are transcribed and pasted at the cursor in any application. A local LLM via llama.cpp handles punctuation and grammar cleanup. With support for 90+ languages, automatic language detection, and a one-time $5 price tag, MumbleFlow offers a compelling alternative to subscription-based dictation tools.
Pricing: $5
Minimum macOS: 14.0 (Sonoma)
Architecture: Apple Silicon, Intel
Key Features
- Fully local processing - audio never leaves your device
- Sub-second transcription powered by whisper.cpp
- Metal hardware acceleration for fast on-device inference
- Local LLM text cleanup via llama.cpp for punctuation and grammar
- Global hotkey activation - works in any application
- Support for 90+ languages with automatic detection
- Built with Tauri 2.0 and Rust for lightweight performance
- One-time $5 purchase - no subscription required
- Cross-platform: macOS, Windows, and Linux
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