Keeping up with what the usage of data, toll cards, rewards, etc is a hard task. But as always, there is an app for that and it is called Consume. This iPhone and iPad app lets you keep track of how much data your consume on your mobile plan, track mail packages, usage of toll cards, etc.
Consume is powered by plain text configuration files known as ‘Recipes’ that tell it how to find your usage. In the event that a provider changes there usage page or API, Consume can download updated Recipes. This means provider issues can often be fixed within minutes.
The list of supported providers can be found in this link.
Consume is available for $2.99 as a universal app (iPhone/iPad/iPod Touch) in the App Store [iTunes Link].