Traffic Light Spirit Level

Traffic Light Spirit Level is a simple spirit level app built for tradespeople, DIY users, and anyone who needs a quick level check.

The whole screen changes colour so you can see the result at a glance:

Green means level.
Amber means slightly out.
Red means it needs adjustment.

Use it for everyday levelling with clear modes for flat surfaces, edges, and plumb checks. The app shows a large angle reading, tells you which side to lift, and includes calibration so you can zero the current surface.

Features:
- Full-screen green, amber, and red level display
- Large digital angle reading
- Flat mode
- Edge mode
- Plumb / vertical mode
- Calibration button
- Zero reset button
- Vibration and high beep when level
- Works offline
- No account required

Traffic Light Spirit Level is designed to be simple, fast, and easy to read on site.