Welcome to the support website for 321 Mark. It is an iOS app for iPhones and iPads. For full functionality your device must have GPS capability (Cellular iPad unless you have an external GPS receiver for your Wifi iPad.) and internet access. The newest version requires iOS 7, but you should be able to download the older version if your device has iOS 6.
Twitter is used to send the Marks and Splits, so you will need to have or create a Twitter ID. Be aware that the race information and your location is publicly visible.
There will be both paid (full featured) and free (limited) versions of the app. The free Lite version will allow crew members to provide Marks and Splits, but will have limited additional functionality.
For getting started information see the Setup and Basics pages above.
This blog will be updated with news on the full and Lite versions of the app.
