The following screenshots were taken simultaneously from the iOS app with two different devices after refreshing the cache: An iPhone 7S and an iPhone XR. Both running the latest iOS and iNat app version.
Note the inconsistency in total observation count and, weirdly, the taxon name for Phoca vitulina.
I use them alternatively for posting to iNat, but I was assuming after refreshing from the server everything would be in sync, observations, upload stats, comments/IDs etc.