No, what you are doing is likely not that complex and just a series of forms and buttons, which jqm is fine for. If you are doing anything truly interface heavy and complex, the hard parts either having nothing to do with jqm or can't be done in jqm smoothly.
And your single codebase likely has a UI and ux that feels wrong on all platforms.
(I built two of the largest US banks mobile apps using Yui and jqm. )