wallenje here(wallenje.com). We are making a mobile wallet app. We applied with a prototype but we are launching on 1st of May. When we applied we got to focus on who we are. I can say the YC application was the turning point for us. We built out our vision, I created a website in 10minutes for a landing page and have 2000 members in the waiting list two weeks after that, got some merchants interested in our concept, this was really awesome. We also recruited our first employee. We are on beta, but the fact that we may get our product-which is an MVP out earlier than Clinkle(clinkle.com 30m funding) without funding has put us on a buzz that YC rejection can hardly put a damper on. Our first rejection was KIMA, so we are getting quite used. We have been brainstormin and have got awesome ideas after every reponse but especially the rejections.
I Remember when we started we thought due to Regulations on financial products we would need more that a million dollars. Its shocking to realise that with the right approach we can avoid most regulation, get partners and get our product out there. Nearly 70 merchants have rejected us but we are still making it with 25 merchants signed up! 1 has paid for product despite existence of a trial period, just for training their staff, and an incentive to release the product fast.
EDITED-got rid of some typos and improved comment clarity