Earlier today, I got annoyed that the HBO Max app did not have macOS support and didn’t properly full screen apps.
So yeah, news but not big news. News non the less. I got the sense not everyone was so impressed
And the HBO Max app on iPhone is terrible in that you can't zoom like you can in most apps, so I can watch something and have black bars on all four sides! Roku & Shield TV app is fine, so I save HBO content for when I can watch on my plasma TV or projector.
The Amazon app for iPhone is quite good and does things properly. Overall I've had a good experience with Amazon streaming (no complaints with Roku or Shield TV version of their app). I'm not sure how well the web player was working, so maybe watching on Mac was already fine, but I'd imagine Amazon's Mac app is not bad. If it enables 4k HDR, etc where it previously wasn't possible in the web player(?), then that's great and I welcome this.