Yes, both ConvertKit and SweepWidget offer a Free Trial.
ConvertKit is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
SweepWidget is designed for Large Enterprises, Medium Business and Small Business.
The starting price of SweepWidget begins at $25/Month when Billed Yearly, while pricing details for ConvertKit are unavailable.
Some top alternatives to ConvertKit includes Campaigner, Moosend and SMTP.
Some top alternatives to SweepWidget includes Gleam, Rafflecopter, Make My Contest, VYPER, EasyPromos, Votigo, Evalato, Contest Rebel, GiveLab, Queue and ShortStack.