Would you want to know if your relationship was doomed to fail?  Well, there is a new app that claims to be able to tell just that. It's called StayGo and aims to reduce the frustrations and inefficiency of online dating. It's been created by a team of relationship science professors and uses 'science and social networking to help you find out faster if you’re wasting time with the wrong person.' It claims to be able to tell you everything you need to know about your relationship, whether you’ve just met your match or you’ve been in a long term relationship. It works by giving you an 'SG score', which is calculated after you tell the app about your significant other. It says you get "a scientifically accurate score with grades in twenty different categories so you can predict your chances of a happy future." It also has an 'SG Tracker' which they've likened to a Fitbit for your love life and it tracks the ups and down of the relationship. Through the app you can also invite your friends and family to anonymously reveal what they really think of your relationship.