Android Development · Privacy by Design
My Android Apps
Modern Android applications built with Kotlin & Jetpack Compose—focused on local processing, speed and full user control without ad trackers.
PDF Reader & Editor
A fast, clean PDF workspace for phones and tablets: open, highlight, annotate, sign and organize PDF pages—without subscriptions or cloud uploads.
- Reading & Night Mode: Smooth zooming, bookmarks, quick search and an eye-friendly dark reading mode.
- Draw, Highlight & Notes: Freehand pen, highlighter, text boxes and sticky notes with full undo/redo support.
- Digital Signatures: Draw your signature directly on screen, resize freely and place it accurately on any page.
- Page Organizer: Rotate pages, reorder, insert blank pages, delete pages or extract a single page as a new PDF.
- 100% Private: All PDF files stay strictly on your device—nothing is uploaded to external servers.
TowFriend (TowForms)
Digital, paperless dispatch and field-documentation platform for towing and recovery services. Currently in active development (Work in Progress) with a strong focus on GDPR security and offline reliability in the field.
- On-Device Vehicle Registration OCR: Local camera text recognition (Google ML Kit) scans vehicle documents 100% offline on the phone without cloud AI.
- Digital Field Documentation: Capture damage photos, checklists and customer signatures directly on site.
- Mobile PDF Reports & Printing: Share completed intake reports as PDFs or print directly inside the vehicle via Bluetooth printer.
- Shift Roster & Live Dispatch: Multi-tenant backend, emergency dispatch alerts and battery-saving location support.
- Development Status: Security hardening, accounting and German XRechnung modules are currently being finalized for production use.
Why I Build My Own Android Apps
Many "free" apps in the Play Store demand expensive weekly subscriptions for basic features (such as signing a PDF) or upload private documents to third-party cloud servers.
My apps follow the exact same philosophy as my personal IT support: clear, lightweight and privacy-first. Feel free to reach out if you would like to test a preview build or have questions.