The challenge is to build a REST client application and deploy it to iOS and Android in 5 minutes. Here I do this with Delphi 10 Seattle, including using a custom Info.plist to connect to a non encrypted REST service, so an encrypted REST service would have been faster. If I wasn't explaining things I could probably shave a minute off my time, but you get the idea.
More information
http://delphi.org/?p=2090
