A simple Android app to launch System UI Tuner.
First introduced in Android 6.0 (Marshmallow), Google included a hidden menu in stock Android with experimental options called System UI Tuner.
The option to launch System UI Tuner in Android version 9 and newer has been removed by Google, but the utility still exists in the system. This application will launch it if present.
https://play.google.com/store/apps/details?id=com.bryancandi.android.uituner