The problem is these days many desktop applications have mobile counterparts and some kind of service to sync the two. If that service shuts down, the applicati

The problem is these days many desktop applications have mobile counterparts and some kind of service to sync the two. If that service shuts down, the application becomes a whole lot less useful. That, and iOS/Android have terrible backwards compatibility, so mobile apps that are not continuously updated often don't work correctly on new OS versions.