This may be a bit off topic, but the world needs more people like you. From what you've described I say you are tougher yet more realistic than most. Fearless. I don't know why the job you left didn't realize that. Most would kill to have employees like you given those employees are also productive.

I agree with Trexen though. Your application will likely fail. Most successful applications I've seen succeed (and companies) are never cold start like that. They always seem to come from an established business approaching someone and professing need for their idea/passion/tool and agreeing to be an early adopter/customer. Maybe you can try finding your early adopter/customer before beginning development on your next project. It's a good way to bring in money earlier and a good way to attract investors. It's hard to develop a tool in isolation without a customer guiding you with use-cases and real world need.