If you want to use your iPad with your Kronos you need way to securely hold the iPad and position it where you need it.
My current live-setup includes the K&M 19722 iPad holder (for iPad 2) which attaches to a mic stand. This gives you quite a lot of freedom since you can tilt and turn the iPad and especially place it away from your Kronos – like above another keyboard from which you want to control your setup.
They have it for most iPad models, check out the K&M website for more details:
iPad / iPad 2: K&M 19722
iPad mini: K&M 19723
iPad Air: K&M 19724
iPad Air 2: K&M 19727
iPad mini 4: K&M 19728
There’s also there’s a product line to be mounted directly on the base of a mic stand without the clamp which gives you less freedom but is more compact.

There are other solutions to place the iPad directly on the Kronos. Here you don’t require a separate mic stand but you’re less flexible in the positioning. The iPad is positioned above the knobs or sliders of the Kronos interface and can be placed anywhere on the Kronos. If you have the 61 keys version you will cover some elements but you can move the iPad anytime.
Search for ‚SMS Special Music Stands‘ on Facebook, here you find contact details and product pictures. Their solution lets you also put a Korg nanoPad on the Kronos.
‚Synave‘ has an iPad holder as well and also offers replacement side parts for the Kronos to give it another look. The iPad mount is not advertised on the website but you can see it on product pictures of the side parts: http://www.synave.de/kronos-brightsides/