Something I'd actually seriously consider in your place is YC companies. They get around 20K which is just enough to create a prototype/beta to solicit a larger round. This is not very much and I imagine many don't raise money right away after their Demo Day. Having another 15-20K could be highly desired in these earliest days. YC has already placed their bets that these companies will become great, and I think their portfolio could have a 40% or better success rate (provided timely variables fit together). If you could add your money and app expertise to make a YC (or another) company stronger, that might be the best risk to reward ratio you can have.