Yes, both Mambo.IO and Crammut offer a Free Trial.
Mambo.IO is designed for Large Enterprises, Medium Business and Small Business.
Crammut is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Mambo.IO Starts at $15/User/Month whereas for Crammut Starts at $8.40/User/Month.
Some top alternatives to Mambo.IO includes Mambo, GetBadges, Bravon, nGAGEMENT, Klujo, Gamifier, StriveCloud App Gamification Platform, Motivarnos, Amazon Forecast and BeeLiked.
Some top alternatives to Crammut includes Engagedly, Plecto, GetBadges, Kahoot!, SelfDrvn, nGAGEMENT, Gamifier, StriveCloud App Gamification Platform, QuizGame and Motivarnos.