For 4 years, I didn't have to develop a surface level because I already had a protractor app. In 2015, I found that most users would not install the protractor instead of a surface level even if they were very similar.
This app supports both portrait mode (for phones) and landscape mode (for tablets) unlike pro version.
※ Introduction video
※ Main features
1) Surface level
2) Vertical spirit level
3) Horizontal spirit level
4) Zero calibration
5) Reset calibration
6) Alarm sound on/off
※ Tile units
① Degree(˚)
② Percent(％)
③ Radian(rad)
④ Roof pitch : for US carpenters, 5½/12"
※ Menu & Settings
- Text size, Text Color, Background color, Show calibration
- Tilt Units, Orientation sensor, Alarm, Reset settings
※ Alarm on/off
Turn on [Alarm] option at the settings. The speaker icon will appear on the app bar.
※ How to lock / hold
Touch anywhere on the screen. "Holding..." message will blink.
※ Orientation sensor ??
Most level apps are using only an acceleration sensor. But this sensor has restrictions. When the slope is higher than 60 degrees, the measurement can be inaccurate. In particular, it has a trouble to calculate diagonal tilt.
This level app has the best solution. Orientation sensor!! It calculates tilt using both magnetic sensor and acceleration sensor. The result becomes more reliable. I recommend that you turn on [Orientation sensor] option (if possible).
Several custom ROM and non-magnetic devices cannot activate orientation sensor. In this case, check your specifications and turn off this option.
※ FAQ
※ Pro version added features
1) 6 tools (ruler, 3 protractors, thread) are integrated
2) No ads
※ What's new
- v1.2.4 : Support for OS 11
6) Alarm sound on/off
※ Tile units
① Degree(˚)
② Percent(％)
③ Radian(rad)
④ Roof pitch : for US carpenters, 5½/12"
※ Menu & Settings
- Text size, Text Color, Background color, Show calibration
- Tilt Units, Orientation sensor, Alarm, Reset settings
※ Alarm on/off
Turn on [Alarm] option at the settings. The speaker icon will appear on the app bar.
Touch anywhere on the screen. "Holding..." message will blink.
※ Orientation sensor ??
Most level apps are using only an acceleration sensor. But this sensor has restrictions. When the slope is higher than 60 degrees, the measurement can be inaccurate. In particular, it has a trouble to calculate diagonal tilt.
This level app has the best solution. Orientation sensor!! It calculates tilt using both magnetic sensor and acceleration sensor. The result becomes more reliable. I recommend that you turn on [Orientation sensor] option (if possible).
Several custom ROM and non-magnetic devices cannot activate orientation sensor. In this case, check your specifications and turn off this option.
※ FAQ
Q. The surface level does not work.
A. Some custom ROM and OS have this problem. Turn off [Orientation sensor] option at the settings.
A. Some custom ROM and OS have this problem. Turn off [Orientation sensor] option at the settings.
Q. I cannot calibrate the level with zero-calibration.
A. You can reset all settings. Go menu > Reset settings.
A. You can reset all settings. Go menu > Reset settings.
※ Pro version added features
1) 6 tools (ruler, 3 protractors, thread) are integrated
2) No ads
※ What's new
- v1.2.4 : Support for OS 11
- v1.2.0 : Portrait <-> Landscape
- v1.1.1 : Reset menu added
- v1.0.6 : New icon
- v1.0.4 : More languages added
- v1.0.1 : Drawer update
- v1.0.0 : Theme update (grey -> white)
- v1.0 : Smart Level released (Jul, 2015)
https://play.google.com/store/apps/details?id=kr.sira.level
If you have any idea to improve the app, feel free to contact me at androidboy1@gmail.com. Thank you.
- v1.0.6 : New icon
- v1.0.4 : More languages added
- v1.0.1 : Drawer update
- v1.0.0 : Theme update (grey -> white)
- v1.0 : Smart Level released (Jul, 2015)
https://play.google.com/store/apps/details?id=kr.sira.level
If you have any idea to improve the app, feel free to contact me at androidboy1@gmail.com. Thank you.
