ios - Merge paid app and free app with in app purchase -

i have 2 application on appstore

1. free app in app purchase.

2. paid app.

now, want keep 1 app on appstore above options 1.free app in app purchase , remove paid app. here want give app full functionality user used paid app (purchased paid app).

here question how can merge these 2 app single app free , contains in app purchase keeping paid app user ?

if have idea regarding please share.

thanks in advance.

i solved problem using icloud. first provided update both application doing following changes.

i used "key value store" icloud option , stored setting on icloud need make sure here "icloud key-value store" value in .entitlements file (which automatically created xcode) in both application same both application. setting stored here accessible both application , depending on setting identified user , gave access specific functionality.