S Tools+ is a pack of 5 different useful tools for your device.
These includes-

•CPU frequency- keep an eye on your CPU frequencies to see at what frequency your CPU was for how much time.

•Sensors- A fully featured Sensor manager for your device,see what sensors your device have with a graph showing sensor values and all the sensor details.

•Color Picker- Color picker helps you in finding all bout colors of an image, just select am image and touch on a point on image to find out color,hexcode and rgb values.

•Compass-A nice looking compass showing you the directions

•Device Information - Find out information about your device like screen density and pixels.

•6 different themes to choose from.

•Material Design with animations


S Tools+ is completely free and Ad-Free. If you like then you can donate to me by purchasing the donate version from Google Play. I would really appreciate it.
https://play.google.com/store/apps/details?id=com.naman14.stoolsp

S tools+ is open source, You can find source code here-
https://github.com/naman14/S-Tools


Please note that I am alone working on this project in my free time besides my studies (17 years old) so please give me some time to fix bugs and if you encounter some bugs or have any feedback,please leave me a mail before writing review.