The only benefits I can see of "Apps", are the developer get's access to private information they really don't need.
Yeah, they get to be on the "App Store". But the "App Store" is a totally unnecessary concept introduced by Apple/Google so they could scrape a huge percentage in sales.
Web browsers have good (not perfect) sandboxing, costs no fees to "submit" and are accessible to everyone on every phone.
A big issue with this trend is that unlike the web, the whole Android ecosystem is a walled garden which is strictly controlled by Google. In principle you can run your own custom Android ROM, but in practice this will lock you out from any app which uses Play Integrity API to enforce Google's totalitarian regime which dictates what software YOU are allowed to run on "your" hardware.
Login is better on the iOS app as you can use touch id/faceId and not userid/password also the webpage asks for cookies as it can't seem to remember the choice