9jaCodes - Glo, MTN, 9mobile, Airtel

9jaCodes is a mobile application that provides an intuitive human-machine interface to subscribers of all telephone networks in Nigeria(Glo, MTN, 9mobile, Airtel). It allows access to all USSD services available on a particular network without requiring any special memory effort from the users. With 9jaCodes, a user is able request a Callback from another contact with respect to the given network by just clicking on a button and picking the contact from his phone book. The application also allows for user to add their own USSD codes to the list and can choose either to dial or delete this code later.
Features in this app include: checking credit on any network, buy data from any network operator, checking data balance on any network, access to all data bundles offered from all the networks(Glo, MTN, 9mobile, Airtel), all SMS bonuses, all call bonuses, all data plans.
The app is very simple to use, just dial the button corresponding to the service you want to access.