Bubble Level & Angle Meter

When you hold the phone against a wall to hang a frame, you can't see the screen.
So this app vibrates the moment it's level. The display is the backup.

■ Vibrates when level
You feel it even with the phone flat against a wall or furniture.

■ Three modes
Surface level lying flat, wall level standing up, and free angle measurement.

■ Zero calibration
On an uneven floor, set the current position as the reference and measure relative to it.

■ Numbers that don't jitter
Sensor noise is filtered so the reading holds still.

■ Privacy
The app does not collect location data.
Sensor readings are shown on screen only; they are never stored or transmitted.