So, generally I still use the iOS app to upload observations because it reliably picks up the location, date/time date from the photos. But, then most other observation features have to be done on the website. So, I often do not bother with DQA, tags, annotations, etc.
From time to time, I try to use the website to upload (via iPhone or iPad), but then I still have to manually enter date/time and map-navigate to the location, even though I get a fleeting message that says ‘uploading metadata’. So, it is also a pain to use the website.
I rarely use a computer, as my old desktop is fairly frail these days.