Built an offline, privacy-focused Android app that lets you capture ideas instantly by saying one word — no phone in hand.
The Problem
I kept losing good ideas while driving, cooking, or multitasking because existing voice note apps required too many steps.
The Solution
Hands Free Notes Offline lets you activate once, say “Pickle” (or “Pico”), speak naturally, and it instantly saves both transcribed text and the full audio recording.
Key Features
- One-word wake word activation
- Fully offline & private (no forced cloud)
- Lightweight and battery efficient
- Free with rewarded ads + $4.99 one-time lifetime unlock
Technical Approach
I used sherpa onnx for KWS detection and whisper.cpp for local transcription. The main challenges were reliable background listening, minimizing false positives, and handling battery optimizations.
Try it for free on: https://play.google.com/store/apps/details?id=com.handsfree.notes
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