Yale behavioral economist Dean Karlan made a site called Stickk (https://www.stickk.com/ https://www.stickk.com/) that has a phone app that helps you do the sam

Yale behavioral economist Dean Karlan made a site called Stickk (https://www.stickk.com/ https://www.stickk.com/) that has a phone app that helps you do the same; you donate money to causes you hate if you don’t do what you say you’ll do