Bubble Level, Spirit Level

Hang pictures straight, level shelves, and check surfaces with Bubble Level, your pocket spirit level and measuring toolkit.
From furniture assembly to home DIY, get clear tilt readings and visual feedback right on your iPhone. Hold an edge against a surface or lay your phone face up to see how it tilts.
Get started with two free tools:

- Bubble level: Check alignment with a live bubble display and digital readings in degrees.
- Surface level: See side-to-side and front-to-back tilt at the same time.

Make everyday checks easier:
- Hold a reading to view it after moving your phone.
- Enable sound and haptic feedback when the reading settles at level.
- Keep the screen awake while you work.
- Angle finder: Lock a reference, then tilt your phone to measure the difference.
- Plumb tool: Check walls, posts, and door frames for vertical alignment.
- On-screen ruler: Measure small objects in centimeters or inches.
- Calibration: Set zero against a surface you trust.
- Slope percentage: Switch between degrees and gradient readings.
- Adjustable response: Choose faster readings or smoother movement.

Whether you’re hanging a frame, adjusting a table, or setting up a tripod, keep your measuring tools close at hand.