Here is how to delete the app:

  1. On your iPhone's home screen, tap and hold the app icon for a moment, and then tap the (x) icon to delete it.
  2. Tap Delete

Here is how to reinstall the app:

  1. Launch the App Store app.
  2. In the upper-right corner, tap your profile picture.
  3. Tap Purchased.
  4. Tap Not On This iPhone.
  5. Find our app in the list, and then tap the cloud icon.