I would make a Roblox version first for some of the game play mechanics. If people like the game and you get product/market fit come out with an IOS version if

I would make a Roblox version first for some of the game play mechanics. If people like the game and you get product/market fit come out with an IOS version if you need to. You can release pretty minimal games on Roblox and see what works very quickly.