What program is used to make Scrivener?

I’m curious what program used to build Scrivener. Is it written in pure programming language?

ANdré

Scrivener is written in Objective-C using the Cocoa frameworks. As with most Cocoa apps, the interface files are created using Interface Builder and the code is written and compiled in Xcode. Both Xcode and Interface Builder come bundled free with every Mac, though they are not installed by default so you need to load them from your install disks.

All the best,
Keith