HGRS
Group step challenges, scored fairly
HGRS keeps score for group step challenges of two kinds: a daily goal, with one entry per goal day and names picked from the entries at the end, or most steps, where the highest step totals take the top places. It is free, sells nothing and never handles money. Works with Apple Health: it reads your step count, and in challenges you join your group sees your daily totals and when you reached the goal.
Get the app
HGRS is free on the App Store for iPhone. This test environment (dev) serves its own test app, and nothing in it reaches the App Store app.