Bubble Level - Spirit Level

Bubble Level: Spirit Level turns your phone into a practical tool for everyday alignment checks — hanging a picture, leveling a shelf, checking a floor, or helping an appliance sit level.

Use this Bubble Level and Spirit Level app to check horizontal and vertical alignment, measure angles, and detect surface tilt. With multiple measurement modes, including Pendulum and Camera Mode, you can easily check the alignment of different objects for DIY projects, home improvement, furniture installation, and everyday tasks.

MEASUREMENT MODES

• Level Mode— Place the edge of your phone against a surface to check horizontal alignment.

• Plumb Mode — Place the edge of your phone against a wall, post, or frame to check vertical alignment.

• Flat Mode — Place the front or back of your phone on a surface to measure tilt across two axes.

• Pendulum Mode — Check angles and alignment using a pendulum-style visual indicator.

• Camera Mode — View adjustable alignment guidelines over the live camera preview.

WHERE IT HELPS

• Hanging pictures, mirrors, and shelves straight.
• Checking whether furniture and appliances are level.
• Checking walls, door frames, and posts for vertical alignment.
• Getting a rough indication of floor, terrace, or walkway slope.
• Measuring angles for DIY and home improvement projects.
• Checking alignment during furniture installation and decoration.

INCLUDED FOR EVERYONE

• Level, Plumb, and Flat modes.
• Angle readings in degrees.
• Visual alerts with an adjustable range and color.
• Vibration alerts.
• Optional alerts at multiples of 45°.
• Camera Mode with adjustable live guidelines.
• Additional measurement units: percent, in/ft, and mm/m.
• Sound alerts.
• Unlimited saved measurements.
• Custom theme color.
• Saved measurements, with copy and share.
• Available in many languages.

### PRIVACY

• No ads, accounts, sign-up, or tracking.
• Measurements are stored locally on your device.
• The app does not send your measurements to its own servers.
• Camera Mode runs entirely on your device. The app does not upload anything from the camera.

### CALIBRATION

The guided calibration wizard covers six orientations: back, front, bottom, top, left, and right. Calibration corrects the constant offset caused by sensor alignment and the shape of the device. You do not need a perfectly level reference surface.

### ACCURACY AND LIMITS

This Bubble Level app is a practical aid, not a certified measuring instrument. Readings depend on the device, conditions, and calibration. Calibration can correct constant offset but cannot eliminate sensor noise or scale errors that grow with angle. Camera Mode shows the tilt of your device, not the true geometry of objects in the image.

Recent changes:
Welcome to Bubble Level!
• Six precise levels: Surface, Horizontal, Vertical, Angle, Camera and Pendulum
• Calibrate once for accurate readings
• Choose from beautiful color presets and bubble, dial and needle styles
• Sound and haptic feedback when you're level
• Save your measurements
• Available in 9 languages
Thanks for downloading!