From what I can tell this is only available in Canberra and Melb stores.
Obviously not as good as BOGOF previous deals but this deal lasts until mid August 2015 which is a decent deal if you eat there regularly like I do.
ios: https://itunes.apple.com/au/app/pokitpal/id385495975?mt=8
Android: https://play.google.com/store/apps/details?id=com.maxelance.…
Don't forget you can also redeem points with the loyalty program: https://loyalty.madmex.com.au/#/login
Bit of a groin kick for us in WA as we already pay an extra dollar for a Burrito.
Australia (ex-WA)
http://www.madmex.com.au/wp-content/uploads/2014/09/Website_…
WA
http://www.madmex.com.au/wp-content/uploads/2014/09/Website_…