Features include: - Simple and clear user interface with custom progress bar that graphically shows your data usage and predicted usage. - Works with ANY cellular provider in any country including AT&T, Verizon, Sprint, T-Mobile, Rodgers, Virgin Mobile, etc. and for all cell technolgies (4G 3G LTE Edge GPRS etc.) by reading data usage from the device. - Billing periods and quota limits can be configured on a monthly or weekly basis to match your providers billing schedule. - Works on any iOS device (iPhone/iPad/iPod Touch) running iOS 5.x or later. - Works in the background to monitor usage and notify users when data usage reaches configured limits. Advanced Features: - Custom counters can be setup allow you to monitor usage during a certain period to help identify data hogging apps. Counters can be easily enabled or disabled and can even be configured to end at a predetermined time. - History graph shows previous data usage for each day. - Email your usage information at any time. Data Monitor Pro is a must have app for anybody on a restrictive data plan. Don't pay those expensive overage charges again.