One of the biggest problems as a mobile developer working with designers is that when designers want to tweak anything like animation duration, font size, etc, I need to change it in code, recompile, rebuild, and then we see the effect. Unlike it is on web, where designers can tweak CSS properties and see the effects update in real time. This got me thinking. What if I have all these tweakable parameters in a plist, back up the plist with Dropbox datastore, have a web interface where designers can modify these parameters, and have the effect live update within a second?
In order to show off this feature, I built an iOS 7 fishing game with an awesome designer, Yi Wei. We built a game, because neither of us has ever built a game before, and I wanted to try out the new iOS 7 goodness - sprite kit. The whole game took us less than 3 days to build, thanks to sprite kit. The code is on github: github.