We've been working on this for a year now and today got featured on Product Hunt. https://www.producthunt.com/tech/up-all-night and we raised our seed round http://techcrunch.com/2016/03/10/up-all-night/ As a designer/founder it's been great to work on a product focused on revenue vs social growth. Happy to answer any questions about mobile ux, subscriptions or our tech stack.