CPU Spy is a free app for monitoring and understanding the usage of your smartphone or tablet's CPU. It allows you to view graphs of CPU, memory, and battery usage, as well as statistics on your device's hardware, including performance, speed, and the number of hardware threads. You can also find out if your device is experiencing a battery drain, or if it is overheating.

CPU Spy is a tool for system engineers and power users who want to gain insight into the behavior of their hardware. It can be used to find and fix issues with hardware and software. It is a valuable tool for developers and users who want to create and use their own applications.