1. Exit the app you are currently in by pushing the home button
  2. Go to the Settings app on your device
  3. Select General
  4. Scroll down and tap on Keyboard
  5. Select Keyboards
  6. Now go to Add New Keyboard...
  7. In the Third-Party Keyboards section, select Keeble
  8. Make sure you toggle the language(s) you want to use to ON
  9. Tap on Done