System Info provide broad information about your system and device.

App have elementary and beautiful interface.

App displayed information about free spaces, usage RAM and CPU.
Also you can get information about all processes in OS. For every process displayed information: percent of usage CPU, memorry usage, full name of process and PID.
All information updating regulary and demonstrating actually stauts.
There is info about architecture of cpu, OS version, version kernel of Linux and complitely data about battery.
It`s most important infromation for diagnostics your Android devices.

You can test your CPU or network connection.
CPU test - it is Linpack test, which measure of a system's floating point computing power. That demostrate to you, how fast you device can do different operations.
Ping test: you can check internet connection, control status of network and transfer packeges.

This app can to help to find problem apps and proccesses, what help to safe your device in good state.