Yes, both Tuemilio and Gravity offer a Free Trial.
Tuemilio is designed for Medium Business and Small Business.
Gravity is designed for Freelancers, Medium Business and Small Business.
Pricing for Tuemilio Starts at $19/Month whereas for Gravity Starts at $47/Month.
Some top alternatives to Tuemilio includes TrueSaaS, GrowSurf, AppVirality, Prefinery, Gravity, Qualified, Workvivo, Prelaunch.com, Waiting list, Nolt, IFTTT and Referlist.
Some top alternatives to Gravity includes Gridbox, Dohnny, Kodingless, MERNKit, AdminJS, CodeTruck, Serverless Cloud, SaaS Forge, React Milkshake and AppSeed.