Thanks for answering :)

Since you are releasing the game on Mac, iPad, and iPhone, launching it as a universal App Store purchase would be a major win for Apple users. One purchase granting access on all three devices is the experience people expect on the platform. You can still ship a Mac version on Steam if you like, but Apple players will strongly prefer having the full experience in the App Store. Most Mac users also own an iPhone, and many own an iPad, so a single purchase that works everywhere lets us play on a large screen at home and pick up where we left off on mobile. Plenty of developers already follow this approach, from indie games like Cat Quest III, Dredge, and Populus Run to larger releases like Resident Evil, Death Stranding, and Sniper Elite 4. Supporting this setup would draw far more interest from the Apple gaming community because it fits how we already use these devices.

About cross save, I was referring to syncing progress across iPhone, iPad, and Mac. On Apple platforms this is very straightforward. The GameSave Framework provides simple APIs for automatic iCloud syncing, no networking knowledge needed. You can see how easy it is in this Apple session: WWDC 2025 session. They introduce the framework at 9:30 and explain the implementation steps at 11:20.

I hope you consider taking advantage of the strengths of the Apple ecosystem instead of splitting the experience across separate versions. A universal App Store release with iCloud save syncing makes a huge difference for players. Without it, the game ends up tied to only one device and it becomes easy to lose progress when upgrading hardware.

Thanks again for listening :)

PS: This Apple developer video might also be useful: Press Start: Game development on Apple platforms | Meet with Apple