I have been working on a start-up the last 10 months or so with a team of two other founders. We have done problem interviews with around 50 target market users, done price anchoring, and have developed part of our MVP. We are currently pursuing getting target users into the app and using it on a daily basis while finishing the MVP, one of the features we are still working on was the #1 problem in the interviews. At what point does it make sense to quit my full time job and focus on building stronger user relationships and finishing development on the app with the ultimate goal of converting the beta users to paying users?
A safe play, quit when the company is actually cash-flowing and can replace your current salary/benefits, etc. Founders running out of personal cash is an all too common pitfall.