Orchestral instruments

I’m new to iPad music, and mostly looking to mess around. I have a free trial of Logic Pro, but Loopy Pro seems more fun. Could people recommend a decent way to get a range of orchestral instruments (strings, brass, etc) in an Auv3 plugin? Thanks.

EDIT: To clarify, I’m interested in having a menu of maybe 30+ instruments to choose from when mapping midi in Loopy. And bonus points if it’s broader than orchestral. Korg Module is one option I’ve read about. Some kind of soundfont player is another.