Numerology is ready for iOS 7. Just make sure you get the latest update (version 1.12.3) that fixes some display issues (if your top bar isn’t purple, you need to update).
Numerology 2 is in the planning stages and will take full advantage of iOS 7 with a new look and new features. If you have something you’d like to see then please let us know about it at support@infinitenil.com