jsCPUInfo shows you live what your Android device is currently doing – per core, including utilization, frequency, and temperature. It also provides a concise overview of running apps, installed packages, storage, and all hardware details that the system reveals without root access.
Practical for everyday use: uninstall unused apps with a single tap, see how many times the battery has been charged (charge cycles + state of health), and check Wi-Fi standards and sensor data.