Yes, both ConvertKit and Rewardful offer a Free Trial.
ConvertKit is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
Rewardful is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Rewardful begins at $29/Month, while pricing details for ConvertKit are unavailable.
Some top alternatives to ConvertKit includes Campaigner, Moosend and SMTP.
Some top alternatives to Rewardful includes Refersion, Affiliatise, Promocate, Affiliatics, FirstPromoter, Ambassador Referral Marketing, Sir Filiate, Partnero and Referral Stack.