I didn't want to invest my resources into "cloud saving" feature (as it is a free app). Setup full authorization, setup database, setup servers and tons of other work to finish the cycle.
https://docs.puter.com/ gives a very simple, yet powerful client-side js SDK to enable full cloud saving and loading of data for my users. I spent a couple of days for integration. Doing everything by myself with full hosting would take weeks, if not months.