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Added in-app rating. Performance and stability improvements.
Accurate bubble level and angle meter for shelves, frames and surfaces.
Turn your phone into a precise bubble level. Bubble Level uses your device's built-in accelerometer to measure whether a surface is perfectly flat, plumb or at the angle you need. Measuring works without an internet connection. WHAT YOU CAN DO • Check horizontal surfaces — tables, shelves, floors, appliances • Check vertical surfaces — walls, door frames, posts • Hang pictures, mirrors and TV mounts perfectly straight • Read the exact tilt angle in degrees • Freeze the reading when the screen is hard to see • Calibrate on any flat surface for maximum accuracy FEATURES • Classic bubble view for flat surfaces • Single-axis view for edges and vertical alignment • Live angle readout in degrees • One-tap calibration that is remembered • Hold / freeze mode • Sound feedback when a surface reaches level • Dark and light theme, following your system setting • Measuring works offline • Small download size ACCURACY The app reads your device's accelerometer directly. For the most reliable result, place your phone on a surface you know is flat and run the calibration once. Accuracy depends on your device's sensor quality, so this app is intended for everyday household and DIY use rather than professional engineering measurement. ADS AND PERMISSIONS This app is free and supported by a single banner ad at the bottom of the screen. The ad never covers the level or the buttons. Showing ads requires an internet connection; measuring does not. The app does not access your camera, microphone, precise location, contacts, photos or files. Motion sensors do not require a runtime permission on Android. Whether you are hanging a shelf, levelling a washing machine or setting up furniture, Bubble Level gives you a fast and dependable answer without digging out a physical tool.