iOS In App Purchase: Will Apple reviewers test live or sandbox environment?

Question

I use In App Payment to sell ingame consumables. After successfull payment I forward the payment receipt to my backend, which validates the receipt with the iTunes payment b

Answer 1

quick answer: if your app in review, use sandbox.

What url should I use to verify my receipt? Use the sandbox URL https://sandbox.itunes.apple.com/verifyReceipt while testing your application in the sandbox and while your application is in review.

Use the production URL https://buy.itunes.apple.com/verifyReceipt once your application is live in the App Store.