Beeper mini includes a hosted service to receive APNS notifications (meant for Apple software)
So I would summarize it as the corporate entity connecting to an Apple API and using it in undocumented ways that they reverse engineered, intercepting messages meant only for Apple software, doing so without prior permission, for purpose to selling access to services which would normally be covered by an Apple EULA.
It is not quite like a smaller word processor wanting to be able to import Word documents - without tying into Apple's service, Beeper Mini has zero value.
So I would summarize it as the corporate entity connecting to an Apple API and using it in undocumented ways that they reverse engineered, intercepting messages meant only for Apple software, doing so without prior permission, for purpose to selling access to services which would normally be covered by an Apple EULA.
It is not quite like a smaller word processor wanting to be able to import Word documents - without tying into Apple's service, Beeper Mini has zero value.