BOOKNOW50
Enter the code and get 50% of your fare back as credit towards a future trip.
Note that it's not a direct 50% off.
Minimum fare for an Advance Booking is $20 for Economy, $25 for Taxi, $30 for Maxi and $40 for Premium.
External cash, card or Cabcharge payments direct to driver are ineligible for Advance Bookings. The 50% rebate is applied as credit to your GoCatch account after you book and complete your Advance Booking. The 50% rebate is calculated from the paid fare value of the trip, excluding credit used on the trip, tips, tolls, levies or surcharges. The Advance Booking must be booked, and the trip must begin, between 12am 26 March 2018 and 11:59pm 7 April 2018 to be eligible for the application of credit. Trips occurring outside this period will not be eligible. Rebate excludes other promotional and voucher credit. Any promotional or voucher credit applied to a trip will be deducted from the fare value when calculating the 50% rebate. This offer ends 7 April 11:59pm.
Trying to boost their metrics a little bit ahead of their attempted IPO.