ios - Passing data between different apps on a single device -

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i'm designing game , i'm still pretty in planning phase part. i'm considering pretty cool feature, i'm not sure if doable yet. have in mind is: possible access game save 1 game using second game. clearler explanation: release game a, user plays through game , collects game items along way (weapons, equipment, whatever). later, release game b, can considered continuation of game (think dlc terms). game b can played scratch, standalone release, i'd offer players option transfer character progression previous one. have option that?

is instance possible create save file on device in neutral directory (not linked specific app), different apps can reference same file on device?

these options:

  • app , app b launch each other using url custom scheme launching data pass between them appended end of url

  • they can share data using keychain

  • they can share data using custom pasteboard

  • treat data document , share via uidocumentinteractioncontroller

  • they can share data using uiactivityviewcontroller

  • they share data indirectly using server / cloud


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