Unless you have an unlimited data plan for your smartphone or tablet, your service plan limits the amount of data you can use per billing cycle. To avoid exceeding these limits and incurring over-billing charges, you can monitor your data usage on a smartphone or tablet using one of these popular apps.
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The Data Usage app is easy to install and uses theme colors that change to reflect current usage status. The app includes all the essential features of a data monitoring system, including the ability to track over time periods that correspond with your billing cycle. It monitors mobile data and Wi-Fi in real time and lets you set usage alerts. Data Usage can help you set daily quotas and predict when you’ll go over your limits.
A Pro in-app upgrade for iOS includes additional options for custom usage counters.
The iOS app costs $0.99 and requires iOS 9.0 or later. It works with iPhone, iPad, and iPod touch. The Android app requirements vary by device.