A new version of Touchable, the controller app for Ableton Live, is available now with compatibility for iOS 7.
Touchable allows you to tweak your Ableton Live 8 or 9 mixer, instruments and effects with full automapping and unlimited tracks and parameters. Use you iPad via wi-fi to perform live with a very low latency. Touchable uses LiveOSC to communicate with your Live software.
More info can be found on the Touchable website.