If you have an app with a configuration profile installed and you want to get rid of that, follow this instructions. You won't need a Mac for that
To delete an app and its configuration profile, follow these steps.
- Delete the app
- Touch and hold the app until it jiggles.
- Then tap the delete button
in the upper-left corner of the app to delete it. If you see a message that says, "Deleting this app will also delete its data," tap Delete.
- If the app has a configuration profile, delete it.
- Go to Settings > General > Profiles or Profiles & Device Management,* then tap the app’s configuration profile.
- Then tap Delete Profile. If asked, enter your device passcode, then tap Delete.
- Restart your iPhone, iPad, or iPod touch.