App 

Primal Audio 4Operator-FM-Synth FM4 with emphasis on emulation (ios app)

there’s 2 FM Synth apps all with 4 OP FM (not like the DX7’s 6OPs) but here’s another one upcoming FM app the FM4 by Primal Audio. coming in december – since I am a big fan of FM synthesis – here’s what’s different in here: unisono fatness microtuning arpgeggiator 8 voices on iPad 2 -3 sound engines – retro sound emulation so this may sound more authentic than DXi (which is a no brainer as well) and another one which is quite expensive.. will cost 99cent (introductory price)  

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