SystemViewer

The app allows you to monitor CPU, RAM, and network usage in real time, as well as battery and memory status.
For clarity, key information is displayed as a graph.

What you can find out*:
1) CPU:
-Brand and manufacturer
-Processor load in arbitrary units and percentage for 1, 5, and 15 minutes
-Average core frequency
-Number of cores and architecture
-Current frequency of each core
-Battery time (since the device was last turned on)
-Hardware and Application Binary Interface (ABI)
2) RAM:
-Total RAM
-Free memory
-Used memory
-RAM threshold
3) Network:
-Connection type
-Network speed in Mbps
-IPv4 or IPv6
-For mobile networks: network operator
-For Wi-Fi: signal strength in dBm
-Internet speed test
4) Battery:
-Charge percentage
-Battery type
-Voltage
-Current current
-Battery status
-Current power
-Current battery charge in μAh
-Connection type
-Battery health
-Temperature
5) Internal storage:
-Total capacity
-Used capacity
-Free space
6) Display:
-Current screen refresh rate
-Resolution
-Maximum set refresh rate
7) Other information:
-Device model and manufacturer
-OS version, VM name and version
-GPU and display parameters
-Temperature sensor information
8) Installed apps, including system apps:
-App name
-Package name
-APK file size
-App UID in the system
-Minimum and target Android version
-Permissions requested by the app
-Launch the app and open settings directly from the floating window

* Some information may not be displayed or may be displayed incorrectly on different devices due to device manufacturer settings...