On average, giving users the option to log in with Facebook doubles the conversion rate. After granting additional permissions, the main fields are automatically filled with Facebook profile data.
Facebook autofill: Once the user grants the permissions for our Facebook "Promotion" app for a game, the fields are filled in by default for future games.
85% Average acceptance rate following a Facebook permission request
Kontest autofill: Our proprietary Kontest Tracker cookie autofills fields for all games entered after the first game.