Once downloaded and logged in to your challenge, you'll see your Home screen which shows the latest activity for you and your team. Tapping the top-left button opens the Menu which you can use to navigate around the app.
Tapping the "Add Activity" button at the bottom of the Home screen opens your personal daily activity chart.
You can tap on a day to see the full list of activity for that day and also add new activity for that specific day.
In the Sync Devices screen, accessible from the menu, you have the opportunity to connect Apple Health (on iPhone), Google Fit (on Android), Fitbit and Garmin Connect. Once connected, your steps from these services will sync to the challenge automatically.
Opening the Profile screen shows you a list of your own personal activity and any achievements you've earned. You can also read any updates that have been sent by your challenge organiser.
The My Team screen shows an overview of your own team's progress. This screen also shows a chart of your team members' daily step counts and the leaderboard within your own team. If you at the team leader (ie. you created the team), you can also invite a new member from this screen by entering their name and email address.
You'll see a list of every team taking part in the challenge on the All Teams screen. You can also tap the "star" button to mark a team as one of your "favourites", saving them to a shorter list for quick reference.
Finally, the Milestones screen shows the challenge's virtual route and the milestones you'll be passing on your journey. The map is fully interactive, allowing you to zoom in for a street-level look at your current position. You can also swipe between milestones to see which ones you'll be visiting next.