I recently built and updated my Android app (PDF Maker). My main goal was to build a 100% offline tool because I noticed most utility apps today force cloud uploads and expensive subscriptions just to scan a simple document.
While I've successfully kept the app completely offline (all processing happens locally on the device) and removed all watermarks, I'm trying to figure out how to grow a privacy-first app.
For those of you building privacy-focused or offline tools:
A lightweight, 100% offline PDF toolkit for Android. Unlike mainstream scanner apps that upload personal documents to cloud servers or force subscriptions, PDF Maker runs entirely on-device.
Features:
- HD Document Scanner with automatic edge detection
- Built-in Biometric & PIN Lock for sensitive files
- Instant Image-to-PDF, Merge, Split, and Sign tools
- Dark mode & multi-language support
- No account or internet connection required.
