The app is fine. The concept is great. The servers that refuse service if they don't see a tip big enough...?? I work for my money. Try it. They don't tip in the business im in. When I was in the food service industry I would get fired for making it all about a tip. Uber fire these drivers that refuse service based on tip. I hear there is no shortage of uber drivers in Houston. I hear people really could replace them. Make your employees join real life.