CallMe
*** Call your partner with a single tap ***
How it works:
(Only the first time)
1. Insert a number (with keyboard or selecting a contact from Address Book)
2. The app will then confirm that the number has been stored in your device and will invite you to close the app.
If you want change the phone number to call you have to navigate to Settings -> CallMe and slide the selector (resetting the number). Now relaunching the APP the phone call will start.