The orders came on Wednesday, in the remedies phase of Epic's case against Apple.
They follow his earlier finding that Apple broke section 46 of the Competition and Consumer Act by blocking direct downloading ("sideloading") of native iOS apps and by barring alternatives to Apple's in-app purchase system.
Apple said it will seek a stay and appeal, citing its intellectual property and the safe, secure App Store experience it says users and developers expect.
Developers and payment providers anywhere in the world can take part, provided developers remain in Apple's Developer Program.
Epic says users will be able to download apps directly from developers, and Apple is barred from charging fees on purchases made through third-party app stores.
The judge said opening these markets is "the direct way in which the contravention and its effects are prevented, restrained and remedied." He also allowed Apple to keep app review and notarization (security checks before installation), and he declined to void contract terms or to find that Epic had proved financial loss.
His finding that Apple's conduct toward Epic was "a paradigm example of its enforcement of the restrictive terms" stands.
Only the Fortnite reinstatement takes effect immediately. The technical and commercial changes for alternative distribution and payments start at noon Melbourne time on 1 March 2027. Apple may apply between 1 and 15 February 2027 to extend that to 3 May 2027, and the court must grant the extension. The injunctions have no end date, though Apple can ask the court to vary or lift them if circumstances materially change. Apple must pay 85% of Epic's costs of the liability trial. A parallel class action will proceed once the current case concludes, and Joel Phibbs of Phi Finney McDonald, which represents local developers, said they will keep pursuing compensation in a second stage. Epic's separate case against Google was dismissed in March after the two settled.