The application does what it says it does (i.e. SMS Gateway) excellently.

The Customer Support has been amazing.

Also, the developer is very accommodating to suggestions and willing to extend the application to do more, as has been the case with the USSD feature some users and I suggested.

He got to work as soon as he was sure the feature was possible on Android and has spent the past few days implementing it.

I have tested his USSD implementation, and it is fantastic.