Hey, you can try out the Recorder now : Duplex 0.95 pending release. Bring out your guitar/mic/whatever and give it a shot 
Looking at what freewheeling has to offer, we’ve actually got quite a lot of the features covered, just with a different approach. For example, there is no overdubbing recording, but there’s side-by-side recordings into different tracks, which pretty much amounts to the same thing, and then some (as each pattern can become a unique combination of recordings). We haven’t got individual sample volume from within the recorder itself, but combine the recorder with the mixer, and you can control the track volume as well.
It’s a very different approach to a looping recorder, but is it a good approach? And can it be improved?