Wow, today I learned there is a Wikipedia app. It never occurred to me to look for an app since it’s been a habit for 20 years to pull it up in a browser. Are there any other notable differences or features in one vs the other besides the two you mentioned?
Easier to read on a small screen and can save articles & bookmarks for offline. But mostly I prefer it over the browser because every time I go to the browser there's something else there to distract me. I look up things in Wikipedia several times a day, so the ergonomics add up.
On iOS, the app doesn't support tabs, apparently intentionally - the usual modern "our UX designers know better than you how you should be using this" bullshit, they want you to use the reading list instead.