It’s a little pointless really. It doesn’t do as much as syncing to iCloud so seems to be limited in that sense and also only shows photos backed up from your phone, so if you have photos backed up from your computer you cannot see them. This means it also has less functionality than Google and Amazon photos which come in at the same price.
If you are looking for something to backup your photos but doesn’t sync changes, doesn’t allow you to compress what remains on your phone once backed up and only allows you to see photos from mobile sources then you may have a use for this though that seems like a pretty restrictive feature set.
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