I'm also recently late to the Animoog party. The last time I had bought a new phone was during the first Obama administration, and it was well past time for an upgrade. So a couple weeks ago, I got a new iPhone with an astronomical amount of memory, and finally bought Animoog.
I've tried a lot of iPad- and iPhone-based soft synths... Nave, Kaosillator, Gadget, Garage Band, etc., but Animoog is easily the best of this class of instruments. I'd say it's the most expressive iPad synth I've seen, and I can't believe I waited so long. The scale definition on the controller easily lends itself to creating custom scales, which can be a nice source of inspiration. The synth engine is simple but sounds great. It's all really well done, and I haven't even gotten into its connectivity features yet.