Koombea announced the release of the Track-r application for iPhone, a mobile client for Pivotal Tracker. Track-r is a free, open source application, and was developed using Rhomobile's RhoHub and the Rhodes "write once and run on many" framework. Trackr uses RhoSync to sync data to your device allowing you to manage your work whether or not you have an internet connection. All of your data is synced with Pivotal Tracker the next time you get a connection.
Track-R uses the Pivotal Tracker API, which has allowed developers to create dozens of tools and applications to help extend the functionality of Tracker.
More information about Track-R is available in Koombea's press release:
To get the app, and get updates on the latest version, see the Track-r page on Koombea's site.