ON Level ON Level v1.1

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ON LEVEL is the most precise slope measurement instrument designed to measure the angles of slope, tilt angle, elevation and inclination of object with respect to gravity. It combines two types of spirit level in one app, which is the Bull's Eye Level and Tubular Level.

With this tool, the slope can be measured by all edges of the device in every direction. When the device is put flat on the table a bubble view will fade in.

This app stands out from other similar tools by its professional design, multi-function and high accuracy. Its application ranged from simple purposes such as checking level of pool billiard table, aligning a frame to professional usages like floor leveling, constructions, furniture arrangement, carpenter, etc.

ON Level comes with high definition graphics and nice user interface design. You can also customize your application view with the combination of 5 cool compass design and 4 beautiful themes, as shown in preview.

For more details information about how to use the app, please refer User Guide in this app.

★ 2 Level Modes: Bull's Eye Level and Tubular Level
★ Quick horizontal calibration
★ Instant reset calibration
★ 5 level design/styles to select
★ 4 theme/background to select
★ Switch to roll indicator mode automatically when the device's tilt angle reach certain value
★ Lock/Unlock level
★ Keep screen awake

ON Level is a free application with more and more features will be added in future. We hope you enjoy this application. If you have any comments, suggestions or questions, please feel free to contact us at potatotree.backup@gmail.com. Thank you!!


Parental rating: 
Everyone (age 6 and over)
Default language: 
Supported languages: 
Chinese, Chinese (China), Chinese (Taiwan)
Trial version: 
"In-App" billing: 
With advertisements: 
ON Level
ON Level
ON Level
ON Level
ON Level
ON Level
ON Level
ON Level


Requires Google Play and/or account: 
Requires third-party libraries: 
Requires 'rooted' device: 
Target Android version: 
Android 4.0.3
Minimum Android version: 
Android 2.1
Requires features: 
Screen portrait, Touchscreen
Requires permissions: 
Access network state, Internet, Wake lock

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Reviews of ON Level

Great app, would highly recommend it!

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