Bubble Level & Inclinometer for iPhone
Bubble Level & Inclinometer uses the motion sensors in a phone to check whether a shelf, frame, appliance or surface is level, plumb or at a chosen angle. Place the phone against the work, read the bubble display or numeric angle, and calibrate it on a known flat reference when the result needs correction. The app gives a quick visual reference for small adjustments rather than forcing a user to estimate by eye. It is best used with the same contact surface and a stable placement, because a phone case, camera bump, uneven material or an uncalibrated sensor can shift the reading.
At a glance
- Platforms
- iPhone
- Price
- Free
- Category
- Utilities
- No ads
- ✓
- No tracking
- ✓
- Works offline
- ✓
- Last verified
- 2026-07-29
- Minimum OS
- 14.0
- Version
- 2.0
- Released
- 2026-07-22
What is it?
Bubble Level & Inclinometer is an app for horizontal and vertical levelling, angle readings, and calibration tools.
What problem does it solve?
A shelf, frame, or surface needs an immediate reference for level and angle.
What it can do
- 2D bullseye level for flat surfaces
- Horizontal & vertical spirit level
- Full inclinometer / angle finder in degrees, percent grade, mm/m and roof pitch (x:12)
- Guided 180° calibration wizard — calibrate once, trust every reading
- Tolerance mode with OK / NEAR / OUT haptic and sound guidance, so you can work without staring at the screen
- Confidence bar shows how stable the reading is
- Hold / Freeze, relative zero (Set 0), measurement history with CSV export, and a shareable measurement card
- Hanging pictures, shelves and frames perfectly straight
Screenshots
How to use it
Place the phone on the surface, calibrate it on a known flat reference if needed, and use the bubble or angle display to adjust.
Who it is for
DIY users, installers, and tradespeople.
Privacy and permissions
You can find the permissions an app may request in its store listing and on its support page. The linked legal pages explain how the app handles data and the privacy choices it provides.
FAQ
Does Bubble Level & Inclinometer include 2D bullseye level for flat surfaces?
Bubble Level & Inclinometer lists this feature in its store description: 2D bullseye level for flat surfaces
How does Bubble Level & Inclinometer handle Horizontal & vertical spirit level?
Bubble Level & Inclinometer lists this feature in its store description: Horizontal & vertical spirit level
What can Bubble Level & Inclinometer do with Full inclinometer / angle finder in degrees, percent grade, mm/m and roof pitch (x:12)?
Bubble Level & Inclinometer lists this feature in its store description: Full inclinometer / angle finder in degrees, percent grade, mm/m and roof pitch (x:12)