After releasing [Smart Ruler] for length measurement, I had to develop an app for angle measurement. This app has 3 protractor modes below (touch, plumb, camera).
※ Introduction video
Ⅰ. Touch mode
Ⅱ. Plumb mode
Ⅲ. Camera mode
In plumb and camera mode, touch anywhere on the screen. The red "Holding..." text will blink.
※ Menu & Settings
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg1590dc1J93uXyaZl3fqi53ExQz5jEs2uwp04bFKhAzvSu-cZWl556PbfXtpmrTTbc7cr_olHRAKS-HG1dr270RwBhbWHbKZhe2Ypq_ukuVzbHksHtqvyxrLt5_9XmcVf57bQyyD6V-nHJ/s320/menu.png)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgG96TQLPiGOzVsj8Xhdl0wMeVeCm6jYb-IPrs_mgCMJ_T87heQTHE3cLPedHoBDGQn-bGDSzg45yYUIx1jIl6FNzUgLUWKoD6Lh_hmUTgJk4J9vj8OQuqcI3tUYwrvgL5-1LIdOSCTRxTs/s200/settings.png)
※ Orientation sensor ??
Most protractor apps are using only an acceleration sensor. But this way has restriction. When the slop is bigger than 60 degrees, the result can be inaccurate.
I tried to find a good solution with an orientation sensor!! It calculates tilt using both magnetic sensor and acceleration sensor. The result becomes more reliable. I recommend that you turn on the option [Orientation sensor] if possible.
Several custom ROM and devices without a compass sensor cannot activate orientation sensor. Please check the specifications and turn off this option.
1) 6 tools (ruler, level, thread) are integrated
2) More Tilt units
3) More languages supported
4) No ads
![Get it on Google Play](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiMrWhKcOzlwVKTmfHnYcoqc7eFs61EYOWHI4r1dfesENY1RbMncBYACE7_xktnkAXFVAyzFTKBG-gTQq-lB1uwhlUTnb8n-exyzrF-IHjMIgJnwJKgNcQ3p7IeHv3vJFSgDRDCzAOhSLwj/s1600/googel-play-badge_s.png)
※ What's new
- v1.6 : Support for OS 11
- v1.5 : Support for OS 10
- v1.4.6 : Galaxy S6 support, Optimized on OS 8.0
- v1.4 : Material design, camera mode
- v1.3 : Action bar
- v1.2 : New icon
- v1.0 : Smart Protractor released (Sep, 2010)
https://play.google.com/store/apps/details?id=kr.sira.protractor
If you have any idea to improve the app, feel free to contact me at androidboy1@gmail.com. Thank you.
- v1.4 : Material design, camera mode
- v1.3 : Action bar
- v1.2 : New icon
- v1.0 : Smart Protractor released (Sep, 2010)
https://play.google.com/store/apps/details?id=kr.sira.protractor
If you have any idea to improve the app, feel free to contact me at androidboy1@gmail.com. Thank you.