Quine 3 is currently in AppStore review; a complete rewrite of Quine to bring it up to speed with the latest iOS platform programming and interface standards.
In preparation for release the current version of Quine has been withdrawn from sales on AppStore, though existing users can still reinstall from AppStore, for example if they delete the App from a device and need to restore it.
I'll post updates here as soon as the review process progresses. It is usually an efficient process.