Costs and recharges

Greetings, I want to know if I download and create an application and I do not buy more energy, for how long can I use my application, because I believe that at some point they take away my service, or do I have to pay a monthly fee? Thank you

There is no monthly fee… just the energy purchase (or simply using the pre-assigned amount), which is mostly recyclable. So more energy means more simultaneous widgets per project and more projects without needing to recycle old ones to make new ones.

Nothing expires… however, if you create an account then eventually don’t log into it for an undetermined amount of time (months, years?) then that account (and any contents) will eventually be deleted.

I suspect that even if you don’t log in for long periods, as long as a project is active and running (communicating to devices) then all will be OK as well.