Rot13 Cipher!

The Rot 13 Cipher is a cool way to encode and decode messages quickly on the iPhone. You can type a message into the app to encode it and then somebody else with the same app can type the encoded message into their app to decode it. This is why the same cipher can be used to both encode and decode the messages A - NB - OC - PD - QE - RF - SG - TH - UI - VJ - WK - XL - YM - Z