I'll come out with a contrarian point of view: I think you're wasting your time and certainly your money.
To have invested your life savings into this app which, uh, is really hard to determine what it does seems silly to me - especially since you have a family to care for.
Slack Meets GitHub Issues? Doesn't Slack already meet GitHub issues in that it integrates with GitHub fine?
The fact that you need a very long blog post to explain exactly what this does should be a warning sign that it's unfocused and released too late.
"It can help you manage everything from todo items to chat messages to blog posts to photos to fully-fledged projects, photo albums and even mini social networks! Really, the type of content you create is completely up to you."
That sounds like a nightmare to me, now I have to invest a lot of time to figure out exactly how this thing works? Start small, focused, make one small thing that does one thing well. Release it quickly, try to get a few people using it (hopefully paying for it) and gather some of their feedback. Find out how they're using it and what their pain points are. Grow from there.
I know you said opportunities where you live are few and far between, and you clearly have the skills, why can't you build a production ready application at an established company?
Finally, I'm being overly critical because I've been in a similar situation before - you spend months building something, release it, and argh! why aren't people coming? It's frustrating, I know, but your skills are better put to use elsewhere.