OctoEverywhere is the right tool for a single maker who wants free remote access and free AI failure detection bolted onto the OctoPrint, Klipper or Bambu setup they already run. The core is free forever (up to 3 printers), it installs in seconds, and Gadget AI is free and unlimited, a real, honest advantage on a budget.
SimplyPrint is a full management platform for anyone past one printer or one person: a real print queue, AutoPrint continuous printing, a full interactive cloud slicer, filament inventory with NFC and label printing, a maintenance system, multi-user roles with SSO, an education plan, native iOS/Android apps and EU/US data residency, none of which OctoEverywhere provides. The two aren't really the same product; if you're running a farm or a school, you want the platform.