ON Level




    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 levelling, 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 Thank you!!

    Users review

    from 498 reviews



    Users comments

    Masoud Moradi

    by Masoud Moradi

    Jun 09, 2017  |  "Awesome"


    johannes vaw der merwe

    by johannes vaw der merwe

    Jul 28, 2016  |  "Awesome"


    Zion Child

    by Zion Child

    Jun 19, 2016  |  "Good"

    The bubble and numbers keep on flickering even with no vibration, on galaxy s5. Please fix the problem.

    Mohsin Shaikh

    by Mohsin Shaikh

    Aug 20, 2014  |  "Awesome"


    Daniel Gruver

    by Daniel Gruver

    Jun 14, 2014  |  "Awesome"

    Good for free

    Lawrence Blacksmith

    by Lawrence Blacksmith

    May 03, 2014  |  "Awesome"