Anytime I'm asked for feedback via the O'Reilly website (I manage the business account for my company), the first thing I always say is that the app is unusable. I've tried it on my Amazon Fire Tablet, Ipad, different phones - it doesn't work.
The user metrics in O'reilly (and probably most learning apps) has floored in the last 12 months. I see they've launched a new AI platform now. They're definitely going in a direction - time will tell if it's the right one.
Personally, I'd love a website that can provide all the ebooks oreilly provides. But it needs to work on a tablet.
I don't use an app, I use website via SFPL proxy, and it works just fine on iPad Pro (12"), but bookmarks do not work, so you need to remember where you stopped to continue after re-login.
It went un-noticed here, I think, but The Pragmatic Bookshelf recently fired most of its staff and are taking on no new books. In the email they sent to authors, they quoted a 40% YoY fall in non-fiction sales, industry-wide.