This app was mentioned in 4 comments, with an average of 1.25 upvotes
They're live via guidebook if you want to go that route. Links are on pretty much any PAX page, but here's the android link: https://play.google.com/store/apps/details?id=com.guidebook.android You have to search and download from within the general guidebook app. PAX Australia 2015 is called "PAX Aus 2015" in it. Download and pick Exhibitors from the menu list. Lists them and you can tap to jump to them on the map.
Here is the link for android. I don't know if there is an iPhone version.
Get the guidebook app:
(Android)
https://itunes.apple.com/us/app/guidebook/id428713847?mt=8
(iOS)
Once you have it downloaded search for PAX East 2015 in guides. You'll be able to download the guide for offline use. The guide included maps, attendee listings, exhibitor listings, schedules, FAQs, and more. You can even search for a company and it will return their booth number and display it on the map for you. If you plan on collecting pins it also has a list of the available ones and where/how to get them! Hope this helps!