The S Tools+ app is a collection of five tools for your Android device. The first one is the CPU Frequency Checker, which is used to see what frequency your CPU was at and for how long. The second is the Sensors manager, which is used to see all the sensors on your device and to view a graph showing the sensor values and all the sensor details. The third is the Color Picker, which is used to pick the color from an image and to find out the color, the hex code, and the RGB value. The fourth is the Compass, which is used to see the directions. The last one is the Device Information, which is used to find out information about your device like screen density and pixels.