I'm using In-App Purchase as Auto-Renewable on my app.
There is 2 plans (For example: Plan A and Plan B) of Auto-Renewable, they are different family. And user must not purchase 2 plans at same time. If user select subscribe Plan B when using Plan A, I will dialog "Please turn off Auto-renewing Plan A from Settings > iTunes & App Store menu".
But I can't find that how to know user turning off or not.
Is there way to know this?