Oddbean new post about login | logout It makes sense. I agree with the "app" sentiment but not "widget". I think of widgets as something that takes one function from an app & makes it easily accessible. Microapps do their own thing, but usually add something with some other app.
"microapp" like Orbot? that's a service, really... services (not system built-in) usually have an icon in the system tray/taskbar (top right of a mobile UI usually) i don't think any distinction is really understood or made whether an app just shows an interface or even just an image on an independent screen with nothing upwards to anything more than that