GitHub offers Free Trial, but AppMaster.io does not.
GitHub is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
AppMaster.io is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Pricing for GitHub Starts at $4/User/Month whereas for AppMaster.io Starts at $165/Month.
Some top alternatives to GitHub includes LiveCode, Codeanywhere, Visual Studio IDE, CodeinCloud, GitLive, Microsoft Azure, GitLab, CodeSee and Bitbucket.
Some top alternatives to AppMaster.io includes Quick Base, AppOnboard Studio, Nwicode, NoCodeZ, Native, Appy Pie, Zeroqode, DrapCode and Codeless.