DIY Technik

App projects at a glance

Open the project pages for Sudoku, GPS Speedometer, Blood Pressure Log and MediBestand. Each page includes information, screenshots, privacy notes and downloads.

MediBestand
MediBestand icon

MediBestand

Keep medication, dosage and stock clearly organised. Daily consumption is calculated automatically.

  • Fully offline
  • Automatic stock
  • Import & history
Go to MediBestand
Blood Pressure Log
Blutdruck-Log icon

Blood Pressure Log

Record blood pressure and pulse manually or by voice, store locally and export as CSV.

  • Manual use offline
  • Optional speech input
  • Local CSV export
Go to Blood Pressure Log
GPS Speedometer
GPS Tacho icon

GPS Speedometer

Large, easy-to-read speed display with overlay, full screen and HUD mode.

  • Overlay & full screen
  • HUD mode
  • km/h or mph automatically
Go to GPS page
Sudoku
Sudoku icon

Sudoku

Classic Sudoku as a lightweight Android app: clean, local and without unnecessary extras.

  • Works offline
  • No ads
  • Clear gameplay
Go to Sudoku page

What all projects have in common

Practical, local and without data harvesting

All apps are deliberately lightweight: no ads, no tracking, no user account and no proprietary cloud.

App data generally stays on your device and is not transmitted to DIY Technik. Many functions work completely without internet access. Individual optional device or external functions – such as Android speech recognition or a voluntary PayPal link – may use an internet connection.

All apps are free. If you like the projects, you can voluntarily support development with a coffee.

☕ Buy the developer a coffee The support link opens PayPal outside this website. DIY Technik does not process any payment data.