Absolutely!
On mine I either currently have or have had in the past:
Audioshare
AUM
AUFX collection
Beatmaker 3
Animoog
iVCS3
Filtatron
Fugue Machine
Gestrument Pro
iMini (the Moog Model D app doesn’t work on 9.3.5 but Arturia’s version does and it’s great)
Caustic
Fieldscaper
Phasemaker
Ripplemaker
Most of the Audio Damage plugins (Adverb, Discord, Eos, Enso. Filterstation, Fuzzplus, Grind, Quatromod, Ratshack, Replicant, Roughrider)
Chordion
Patterning
Ribbons
Sector
RE-1
RM-1
Strom
Streemur
Klevgrand stuff (DAW Cassette, DAW LP, Degrader, Svep, Haaze
Volt
Steps
Borderlands
Samplr
Degrader
Launchpad
Blocs Wave
iMPC Pro
Some of them aren’t the latest version and I can’t vouch for how well they all work as some of them are recent purchases that I’ve only used on my Pro or iPhone but I’ve no reason to imagine they won’t be great. Bottom line is: you make AMAZING stuff with the apps you can get on an iPad 3rd gen!