I think there’re many factors that will determine success of this app:
Who are the buyers (age, occupation, background…), what kind of property (condo apartment, house…), what is the reason of purchase (principal residence, investment…)
Definitely it’s a great feature that makes agent’s job more efficient, helps them to save time and expenses on showings. It’s good for foreign investors or people that relocate. Certainly it is amazing feature for new construction of all kinds (I saw one of such apps for one of the projects in GTA – fantastic).
But I doubt it will revolutionize real estate, especially in resale segment. At least for now.