Hi. A simple adapter won't work as the signal from the guitar is so low you have to have impedance matching or nothing really gets through. Also, on the ipad headphone jack, the typical Tip-ring-sleeve jack won't work as it grounds out the input signal contact point (which is why there are 4 connection points on the 3.5mm jack for iPhone headsets - the microphone output requires its own contact point). Finally, I don't think you can make the 3.5mm input jack on the iPad operate in stereo, so if you want to create stereo tracks, you have to use the 30pin connector anyway. The apps I am using are Amplitube (for guitar only) and Blue Fire (for stereo).