How to track auto-renewable subscription in iOS?

Question

Objective-C

Gentlemen, the question of the next plan is how to work with Auto-renewable subscription.
We are trying MKStoreKit ( https://github.com/MugunthKumar/MKStoreKit), but several questions arise:
1) How to track the moment when the subscription expires and how at that moment (when receiving the event) to transfer the client screen to the subscription purchase screen?
2) How can I check for a subscription at the time of application launch?
Maybe there is a good tutorial or guide?

Answer 1

1) don't use MKStoreKit.
2) do it yourself. As it is written in AppleDoc.
Once there was a similar task. I suffered with MKStoreKit. Then he spat and did on Epplovski. Everything is transparent and without glitches.