If you have installed several events inside a multi-event app on Android, you can clear out the space either by uninstalling the app or by clearing the app data.

To clear data on Android (steps may be different on different devices due to manufacturer changes): 

  1. Open the device Settings app
  2. Scroll to Storage
  3. In the storage section, choose Apps
  4. Select your events app from the list and press the Clear data button