# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2020-06-19 21:36:25 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/1274093703485931521) I'm also surprised that Playground books aren't used for more things. Don't tell Apple this, but you can actually deliver significant functionality outside of the App Store using a Playground book. https://t.co/DDRqgjCGbS