Scout Challenge is a free resource to make your scouting program more fun.
When you register, you will actually create an account for your scouting group that can be used for both Scout Challenge and Troop Kit.
You can use Troop Kit for free for 3 months, if you'd like to give it a try. After that, it costs just $18 per year for your whole scouting group.
You can use Scout Challenge without using Troop Kit.
Your registration for Scout Challenge is free forever - the only expense is if you purchase the cool patches and pins for your scouts.