permissions for "Brightness Level" app

[gargavf]

I am thinking of downloading
Brightness Level app
https://forums.androidcentral.com/e....widgets.brightnesslevel&hl=en&token=iaBQJ7-j

But what makes me hesitate is it says

Brightness Level needs access to
"
Storage
Modify or delete the contents of your USB storage

Phone Calls
Read phone status and identity

System tools
Modify system settings, test access to protected storage.
"

Of those, I don't like the idea of it being able to modify/delete on USB storage, or read my identity on my phone.

Thoughts?