The new Pinball Arcade physics engine is a step in the right direction. Live and drop catches are possible but still a little flaky. It is great as a way to kill time and is also good to learn rules and try out strategies that you might not ever try on a real machine.
Pinball FX is more of a video game to me and is all about the theme integration. The modes and rules are usually way way too grindy, but if you like the theme its fun to see the different ways the theme is integrated. The star wars and marvel tables are all great to me but again the rules and grindiness of the tables doesn’t make them good pinball.
The Zaccaria app has pretty awful physics, but the tables are all free to play with ads at the bottom.