Is there a lightweight software that can get LogCat logs from my android device and print them on a console-like screen?
By lightweight, I mean a few megabytes.
You can view logs with
adb shell logcat
https://developer.android.com/studio/command-line/logcat
You can also view logs on your computer:
To view log output using adb, navigate to your SDK platform-tools/ directory and execute:
adb logcat
That's about as lightweight as it can get :-)