Arts IT Savvy

First app to look at is iiQuota.

iiQuota is used to keep track of your mobile phone usage, remaining credit, data usage.  Even some ISPs are included. The app has some significant benefits over the competition.  Firstly, it is NOT restricted to a single carrier – you don’t have to buy the VirginMobile version, or the Optus version, or the Telstra version etc.  You can use any of the major carriers with the same app.  Another benefit is the app will track multiple accounts, across multiple carriers.

By clicking on an individual name (on the iPhone, not here!), you can bring up more specific, and extended information.  Oh, and the interface (skin) is customisable.