"Do i have root?"
This app will answer your question.
It will also give you a few details about your su binary,super user application and busybox.

Press the button and read the results.
Maybe share them afterwards.

This app will NOT root your DEVICE!
If this came preinstalled with your custom ROM, don't ask me how to uninstall it!

This app contains an ad banner.

Permissions explained:
Internet access for ads and crash reports. Storage access to export results.

You can find the source code for this app on GitHub:
https://github.com/d4rken/rootvalidator