Yeah, I agree here. I don’t know if the app can be iOS app can be redesigned to open faster, but it is rather too slow right now (I have an iPhone 5S). When someone presses the button on my Ring Pro doorbell, I get notified right away, but when I then tap on the notification to open the Ring app, it can take upwards of 20 to 30 (or more) seconds for it to open, and the person who rang the doorbell has already left. It would be nice to make that whole transition faster so that you can actually answer the doorbell. Does this make sense? :-? 
Thanks.