Call Meter 3G - Call Meter 3G is an app that acts as a monitoring tool for all your calls, messages, and internet data.
Relief - The free app that gets rid of your credit card debt
Data Usage - Data Usage Monitor | Your guard against data plan overages.
Qapital - Qapital is an easy to use Finance application that allows you to save money automatically and take control of your spending.
DataMan – Data Usage Widget - DataMan – Data Usage Widget is an application that enables its user to know how much data he has spent from the total internet package he is using.
Digit - SMS bot that monitors your bank account & saves you money