Here's what Focusrite has to say about their new app...
Focusrite iOS Control works with the Focusrite Control desktop application that comes with all Focusrite audio interfaces from the Scarlett 6i6 (2nd Gen) and up, including the Clarett and Red interface ranges. Just install the free iOS App on your iPhone or iPad, make sure you're connected to the same network, and approve the iOS device in the desktop app. Focusrite iOS Control gives you remote control of your hardware inputs, software playback, panning, solo and mute as well as the preamp settings on your interface - all from your iOS device.
The features you can control depend on the Focusrite interface you have. Configure input settings such as Mic/Line/Instrument mode or engage Air mode; and on a Red interface, access gain and other preamp settings such as stereo linking and phase reversal. View channel metering and enjoy full control over output levels. Control individual software playback and input monitor levels for each mix you create in Focusrite Control. Adjust your own monitoring levels while sitting at the drum kit or in the vocal booth - and all from your iPhone or iPad.
Pricing and Availability:
Free at the app store.