Yes, both stack.promo and Xoxoday Plum offer a Free Trial.
stack.promo is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Xoxoday Plum is designed for Large Enterprises, Medium Business and Small Business.
Pricing for stack.promo Starts at $20/Month whereas for Xoxoday Plum Starts at $5,000/Year.
Some top alternatives to stack.promo includes Xoxoday Plum, Capillary Loyalty Plus, LoyaltyXpert, Open Loyalty, S Loyalty, Novus Loyalty, RoboRewards, Adelya Loyalty Operator, LoyaltySurf and Retyn.
Some top alternatives to Xoxoday Plum includes Annex Cloud, LoyaltyXpert, Open Loyalty, Incentivesmart, S Loyalty, RoboRewards, Fielo, Benefit One, LoyaltySurf and Benefits.