This software is very easy to use even for people who have no knowledge about this type of software.The only thing that I would like it's more flexible because if you want to do something in your own way or make changes to the code you need to log into the server where the source files are located which can sometimes be difficult/time consuming.
We used Mind Bill as we wanted our clients using different devices to pay bills at one place instead of having to send their credit card details via SMS every month.