At whoo.ai we build smart devices for apartment buildings.
This intercom works like you would expect: When visitors select your apartment at the building's intercom, it calls your iPhone or iPad and lets you talk to them and see them no matter where in the world you are. And it lets you buzz them in too!
This is what an intercom ought to be.
support for multiple doors
Up to six family members will be able to use this app with Family Sharing enabled.