I'd like to get a beat making application for my phone and was wondering if you all had any recommendations. Thanks.

Caustic 3, Animoog, RD3 Groovebox, nanoloop, sunvox.

+1 (don't know if animoog is for android too)

Others:
audio evolution (daw for android: seq/rec/midi etc also via usb soundcard)
g-stomper (a beast, very similar to korg esx but better)

free:
synprez fm, common fm and common analog cool free synths; vuknob cool weird modular groovebox

I'm a fan of Caustic, personally. It's basically if Korg redesigned Reason and trimmed a lot of the fat. It's also being actively developed and Rej is pretty open to suggestions in lots of cases in terms of features. There's free version you can try out for PC and Mac that's identical to android version so you can try it out before plopping money on it.