2012-12-10 イベントアプリをたった15分で作れるYappが一般公開へ http://jp.techcrunch.com/archives/20121113let-the-app-creation-era-begin-yapp-events-app-builder-launches-out-of-beta/?utm_source=dlvr.it&utm_medium=twitter https://www.yapp.us/