you can add all your favorite USSD code, even those that needs an input, you can do that by putting your code USSD like that : eg: *133*N*M*C# (in this code you said to the app that you need three text field and the first one go to the place of "N"....). *133*N*M*C# : i need 3 text field.
*133*N*M# : i need 2 text field.
*133*N# : i need 1 text field.
Also for those who intend to come to Seychelles, this app facilitate access to services for mobile operators .