According to his blog post he didn't build it - he hired people to do it for him. I agree the figure seems rather high, although it does include a designer and

According to his blog post he didn't build it - he hired people to do it for him. I agree the figure seems rather high, although it does include a designer and developer. (...before someone chimes in: I do commercial iOS dev for a living. I know that $7k isn't really high at all in the scale of development - but I also know I personally wouldn't invest $7k of my money into an app that was basically a timer)