# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2016-12-15 09:23:17 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/809327962885603328) RT @flyosity: Kickstarter’s iOS app is all-Swift and open source. Sketch files for the UI, too. Amazing learning resource. https://t.co/QwC…