Yes, both Gametize and Mambo.IO offer a Free Trial.
Gametize is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Mambo.IO is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Gametize Starts at $100/Month whereas for Mambo.IO Starts at $15/User/Month.
Some top alternatives to Gametize includes GetBadges, Kahoot!, Quboo, 1Huddle, Klujo, Gamifier, Drimify, StriveCloud App Gamification Platform, BeeLiked and LVL Up.
Some top alternatives to Mambo.IO includes Mambo, GetBadges, Bravon, nGAGEMENT, Klujo, Gamifier, StriveCloud App Gamification Platform, Motivarnos, Amazon Forecast and BeeLiked.