Will there ever be effects that we can use with android phones and not have to be I phone
Not really until Android gets a bit more audio friendly. Right now there are too many hardware variables to run a stable Virtual Midi so there's not a way currently to do Pitch to Midi on Android. The TWA already has everything needed to process the signals once it becomes available.
What you can do with Android is use the iRig hardware and their respective apps to add additional effects and loop it back into the TWA or play along with music or jam loops/drum tracks.
For sampling other instruments like what we demo on the iDevice video with SampleTank, you have to have Pitch to Midi, it won't work with a regular audio signal.
I'm sure it will be available sometime in the future as Midi recording is getting more and more popular on tablets and phones.