A free program for Android, by Xynotec.

A high-performing phone is a must nowadays. So if you’re on the lookout for an app that optimizes your Android phone’s performance, look no further than AndBooster (Memory Cleaner) App. This app improves your device’s speed, making for a lag-free experience. 

AndBooster (Memory Cleaner) also reduces temperative, preventing device overheat and improving battery life. In addition, this tool provides a list of apps that consume the most CPU and RAM.  The user interface is not the most eye-catching, but it does get the job done as it shows relevant stats such as CPU usage (in percent), memory information, CPU temperature (in Celcius), and battery temperature (in Celcius) in one menu screen.