Here's an old editor for TBMS (TB Midi Stuff) for iPad that I made some years ago.
The TBMS file is a regular "page". But if you want to save whatever patch you've created, I'd suggest you save it as a "canvas snapshot", which I find is the best way to save your "patches" on the iPad. To save you press the MAGNIFIER in the top left corner, then press the "i" next to the patch name, name the patch, categorize it, and SAVE. The main difference and advantage of saving as canvas snapshots with it, is that it then remembers all of the set parameter values for each control, which it does not do otherwise, when saving as a "page".
If any questions or problems, feel free to ask and I'll see if I can fix it, but as I don't have a Prophet '08 anymore, no guarantees... But it has worked fine so far.