Apple won't allow any browser engine except Safari to be installed on any iOS device. And I'm not aware of any movement toward basing Electron on Safari. Unless

Apple won't allow any browser engine except Safari to be installed on any iOS device. And I'm not aware of any movement toward basing Electron on Safari. Unless one of those changes, you can count iOS out with no need to discuss technical questions of power drain, app permissions, or whatever. What many phone devs do instead is to create a native app as a minimal native shell around a "web view" window that is provided by the OS.