Audiokit synth 1

AMAZING SYNTH for iOS- totally free - look no further!!

Korg Gadget

You can get a free LE version of this that is limited but good to get started with. It has great vintage sounds but the LE version is a bit limited. really good for those of you that like to program in the piano roll style...

Recording with iOS

JamKazam

Jamkazam is great if you spend time with it and you have fibre, ethernet and a good system. Can be a useful tool but you need to get all your collaborators to the same tech level. There is a real BETA feel to it and they have just started charging... the service can be patchy between updates but it is a new thing that hopefully will get better.

iKaosilator and Ableton Link

EGDR808 Drum machine emuation

This drum machine emulation for iOS sounds authentic and is easy to use. The price is ok too at £4.99 Bit fiddly for fat fingers on a small phone but can use it, better on an iPad. Supports ableton link there is a dmeo trial before you buy

AUM iOS audio Mixer: http://kymatica.com/apps/aum

http://kymatica.com/apps/aum This app although pricy (£19.99) looks to be the answer for creating a complete DAW on your iOS device - it chains together and mixes sound form multiple music apps and connects them to sync with many DAWs such as Ableton. You can also mix and export your sound form all the apps together on the single device -looks like a must for the serious music maker looking to make mobile music.