iTracking is an application that lets you keep track of all your shipments. You can track your shipments online, using the website of the postal company, but this is often slow and cumbersome. With iTracking, you can add as many packages as you want and keep track of them from a single window. To add a package, you only need to type a name for your shipment, choose one of the supports postal services and click on Track/Save. Some of the available services are Hong Kong Post, China Post, UPS, USPS, and DHL. After you add a shipment, if the application can find information about it, it will be displayed in the text field below. Some tracking numbers take a while to show information on the web, and the same thing happens with this app.
iTracking has two interesting features that I haven't seen in similar apps. The first one is Dropbox syncing. This is useful if you already own the iOS version. If you enable syncing, all the data that you add from one of the apps will be readily available on the other whenever there is an active Internet connection. The second great feature is Growl notifications. When the status of your shipments changes, you will be notified via Growl.
In conclusion, iTracking is a nice app to have if you regularly track shipments online. The number of supported services is great, but some of them don't work at times.