QANTAS A380 1.0 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The application lies within Theming Tools, more precisely Screensavers. We recommend checking the downloaded files with any free antivirus. The actual developer of this free Mac application is Qantas Airways.
From the developer:
QANTAS A380 lets you experience the comfort and the exceptional service of your next international journey onboard an Airbus A380. To improve the comfort on long haul flights, the fleet of 12 A380's are to be refurbished as part of a major cabin upgrade. You’ll see improvements in each of the cabins with a change in the seat mix offering more space and refreshed interiors to enjoy onboard.
You may want to check out more Mac applications, such as Qantas or Safelog Pilot Logbook, which might be similar to QANTAS A380.