Hi,
I did something similar, but without Databin at the time for the iPhone,
I have managed to look at Parkinson tremor data with it though. The things is that the streaming only works within the same network or it records the data locally - which is not that much fun. Alternatively, a Raspberry can pick the signal up and relay it to the Databin. I, too, have tried to get a Tasker like program for the iPhone and the closest thing I could find was:
It can send data by email. I managed to record my GPS positions on the way to work with it and have it sent to an email account. So technically it should work with the Databin. I’ll try to show results later.
Cheers,
M.