This can be found in download page.
For this you need to be a partner or customer.
But To access QlikView from Ipad or Iphone you don't need this.
You just need to make sure that you are connected to the same domain as that of QlikView server and use the same url you use to access QlikView in your desktops in any of your mobile browser.
if you have access to the partner portal you can download it from there. Otherwise you'll have to contact your partner in order to get it. It is important to install the same version as your server Installation, so make sure to check which Service Release and the version of your server,
Also after installing, you'll need to add an attribute to those apps that you want to enable for offline use (in Management console > User Documents > select the desired document > Document Information > you have to add an entry like this):