There is SPENT (https://playspent.org/html/). It's a linear, choose your own adventure story, but not really a game, IMHO.
I've seen a couple apps on Google Play but they have under 100 downloads, and focus more on stock trading.
Is this a niche worth exploring? Would it be possible to make a game that is both entertaining and educational about the real challenges these people face, at the same time?