Stardew Valley for iPhone and iPad lets you import save games from your PC or Mac. You can also transfer save games from your iPhone or iPad back to your PC or Mac, or between iPhones and iPads.
If you’ve used mods in Stardew Valley on PC, your save files will probably not work correctly. However, if you haven’t touched mods, they’ll work perfectly.
How to Find Your Stardew Valley Saves Folder
Your Stardew Valley save games are stored in a folder on your PC or Mac. On a Windows PC, you’ll find them at:
%AppData%\StardewValley\Saves
You can open this folder by launching File Explorer, pasting the address into the address bar, and then pressing Enter. Or, you can press Windows+R to open the Run dialog and enter the path there.
On a Mac, your save games are in the following location:
~/.config/StardewValley/Saves
You can open this folder by launching Finder, clicking Go > Go to Folder (or pressing Command+Shift+G), pasting this path into the box, and then pressing Enter.
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Source: How-To Geek
