Yes, both ConvertKit and RetargetKit offer a Free Trial.
ConvertKit is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
RetargetKit is designed for Large Enterprises, Medium Business and Small Business.
The starting price of RetargetKit begins at $7/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 RetargetKit includes Bitly, RocketLink, Rebrandly, ShortSwitch, Cutt.ly, SHORBY, Short.io, Switchy, Linkjoy, MyLinks On Acalytica and Smartlnks.com.