Nice and simple, however, l have the same issue as another reviewer posted...I cant manually adjust the Usage in settings. A popup box shows but no keyboard to input the usage numbers. I have emailed the developer with this issue so hopefully an update with this fix will be made soon and I will update my review with more stars. Update: 12/14/14 - No update for iOS 8 yet. The customer service for this app is as useless as this app is for iOS 8. I have emailed the developer on three separate occasions and no response. This is poor business. They take your money and then do not respond. If you are on iOS 8 save your money and stay away from this app and developer. Use the Data Widget app for the Notification Center. It works well and is updated. HEY DEVELOPER, I WANT A REFUND. NEXT STEP IS A FORMAL COMPLAINT TO APPLE.