SimpleTopup is an Android app that allows you to make phone calls and send SMS messages from your computer. It is a utility that is used by companies to make phone calls and send SMS messages to their customers and business associates. It is used for marketing purposes, to increase the customer base, and for customer service. The service can be used for making phone calls and sending SMS messages. You can also do DTH and mobile recharge, and many other things. It works in the same way as the official Android app. The app has a user-friendly interface that is easy to use.