LevelKit: Bubble Level & Angle
Contains adsIn-app purchases
Everyone
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About this app
Hanging a shelf or a picture frame, leveling furniture, checking a slope? Just set your phone down. LevelKit measures level, slope, angles and direction in one app, and lets you calibrate for better accuracy.
■ Level
· Lay the phone flat for a surface level (bubble, X and Y), stand it on an edge for a bar level — it switches automatically
· Big 0.1° readout; turns green with a short vibration when within your tolerance
· Hold to freeze the value, Save to keep it with a note
■ Two-step calibration
· Measure once, turn the phone 180° and measure again — the surface tilt cancels out and only the sensor error is corrected
· Calibration stays on your device and can be reset anytime
■ Slope & angle
· Tilt shown as °, %, 1:n and rise per meter at the same time
· Set a reference to measure the angle between two surfaces
· Difference from a target angle (0, 15, 30, 45, 90°, ramp 1:12)
· On-screen protractor: drag two arms to measure an object
■ Compass
· Heading in degrees with 16 directions, lock a target bearing
· Enter magnetic declination yourself to read true north (no location permission)
· May be inaccurate near magnets or metal
■ History
· Level, slope, two-surface, protractor and compass values with notes and time
· Swipe to delete (with undo), export to CSV
■ Private by design
· No location, camera or storage permissions, no sign-up, no server
· Measurements and history stay on this device
· Dark mode and large text support
· No ads covering the measuring view, no ads on your first day
· Remove ads with a one-time purchase (not a subscription)
Note: Sensor accuracy varies by phone. For precise construction work, double-check with a professional level.
■ Level
· Lay the phone flat for a surface level (bubble, X and Y), stand it on an edge for a bar level — it switches automatically
· Big 0.1° readout; turns green with a short vibration when within your tolerance
· Hold to freeze the value, Save to keep it with a note
■ Two-step calibration
· Measure once, turn the phone 180° and measure again — the surface tilt cancels out and only the sensor error is corrected
· Calibration stays on your device and can be reset anytime
■ Slope & angle
· Tilt shown as °, %, 1:n and rise per meter at the same time
· Set a reference to measure the angle between two surfaces
· Difference from a target angle (0, 15, 30, 45, 90°, ramp 1:12)
· On-screen protractor: drag two arms to measure an object
■ Compass
· Heading in degrees with 16 directions, lock a target bearing
· Enter magnetic declination yourself to read true north (no location permission)
· May be inaccurate near magnets or metal
■ History
· Level, slope, two-surface, protractor and compass values with notes and time
· Swipe to delete (with undo), export to CSV
■ Private by design
· No location, camera or storage permissions, no sign-up, no server
· Measurements and history stay on this device
· Dark mode and large text support
· No ads covering the measuring view, no ads on your first day
· Remove ads with a one-time purchase (not a subscription)
Note: Sensor accuracy varies by phone. For precise construction work, double-check with a professional level.
Bubble level, slope, two-surface angle, protractor and compass. No permissions.
Updated on
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
What’s new
나침반 화면이 작은 기기에서도 잘리지 않게 다듬었습니다. 버튼 글자가 단어 중간에서 줄바꿈되지 않게 고쳤습니다.
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About the developer
김광철
00-88@hanmail.net
율하동로17길 46
3층 303호
동구, 대구광역시 41120
South Korea
