CODEWITHSUNDEEP
iosin-app-purchase
Nick
Nick

Reputation: 3435

How to detect if user has made any in-app purchases?

My iOS app has in-app purchases (consumable) and shows ads periodically. The idea is to remove ads after user has purchased anything. But in-app items are consumable, so after user re-installs the app, I would be unable to determine if he has purchased anything using [[SKPaymentQueue defaultQueue] restoreCompletedTransactions];, right? And I would bomb him with ads again...

What would you suggest to find out that the user has purchased anything already?

Upvotes: 0

Views: 1322

Answers (2)

gnasher729
gnasher729

Reputation: 52530

As an improvement on the situation, you could store the fact that a purchase was made in NSUserDefaults. That won't survive if the user uninstalls and reinstalls the app, but at least it survives if the user buys a new phone and restores a backup to transfer everything to the new phone.

You could have a look at Cloud Kit as well, which would store information per AppleId. It's a bit overkill for the problem, but it means you can use Apple's servers instead of your own for free. There would be a difference that if a user installs your app on six devices, makes a consumable purchase on one device, ads will stop on all of them.

Upvotes: 0

giorashc
giorashc

Reputation: 13713

Well when a user re-installs your app (i.e. delete it and install it again) there is no immediate way of knowing what purchases did he made. That's why Apple requires your app to provide a way to restore previous purchases so that when the user performs this operation he restores these purchases for free.

For consumable items you might need to use a server for managing the purchases such that when the app loads it checks with the server which purchases the user has made and immediately enable the relevant content.

I do not know if mandatory but "Remove Ads" IAP should be non-consumable so the user will only need to purchase it once (Otherwise I believe users will complain or just won't buy it).

Some creative ways can be found here : iPhone - in-App purchase consumable correct approach

Upvotes: 2

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