Apps like Performance Monitor

Here are some great alternatives to Performance Monitor by Red Shuriken :
SysFloat - Monitor FPS,CPU,GPU
SysFloat - Monitor FPS,CPU,GPU
★3.5
Phone CPU Monitor & Battery
Phone CPU Monitor & Battery
★4.6
Device Info: CPU, RAM, Storage
Device Info: CPU, RAM, Storage
★4.3
CPU & RAM Monitor
CPU & RAM Monitor
★4.4
OS Monitor: system manager
OS Monitor: system manager
★4.5
Cpu Monitor: Temperature
Cpu Monitor: Temperature
★4.2
CPU Monitor - temperature
CPU Monitor - temperature
★4.4
Powerful RAM Monitor Pro
Powerful RAM Monitor Pro
★4.2
CPU Monitor
CPU Monitor
★4.5
Task Manager: monitor CPU, RAM
Task Manager: monitor CPU, RAM
★3.2
Activity Monitor: cpu, battery
Activity Monitor: cpu, battery
★4.1
Game Booster Play Games Happy
Game Booster Play Games Happy
★4.3
Game Booster Play Games Happy
Game Booster Play Games Happy
★4.5
System Info Droid
System Info Droid
★4.6
CPU Monitor - temperature
CPU Monitor - temperature
★4.6
Smart Device Health Care
Smart Device Health Care
★3.9