this is strange to me...I feel this could have been an add-on to the Calendars app. When creating an Event, if could just ask "would you like to create an invitation?" and then proceed to do what this app does. /'
Maybe this creates bloat to a streamlined app, maybe some wouldn't need this and would never "waste" space on their phone for it...now to take it one step further besides downloading ANOTHER app, I can only CREATE an invite as a subscriber to Apple iCloud+...ridiculous.
that said, I downloaded it and started to create a test event. the app has great features for location with map, weather info...Music and Photos capabilities (perhaps this is why it is tied to iCould+but can't you JUST have iCloud+ for storage and not Music?)
We have family get-togethers and everyone now has an iPhone so this could be really nice. BUT, only our family has iCloud+ so, it only really works for the parties at OUR house. Bummer Apple, Bummer.