There are cases where a result response is not received from iOS after completing the purchase.

[baesumin]

There is no problem on Android, but on iOS, the currentPurchase value may not come in from the useIAP hook after completing the purchase.

---

ex)
const {
getProducts,
currentPurchase,
currentPurchaseError,
finishTransaction,
requestPurchase,
} = useIAP();

useEffect(() => {
if (currentPurchase) {
console.log(currentPurchase); // -> Sometimes it doesn't work on iOS
}
}, [currentPurchase]);

---

Is there anything I'm missing?

---

Additionally, I found a situation where receipt details were not sent to the callback if user used another payment method instead of paying with a credit card.

[brent-charlton]

Does it behave the same in a none sandbox environment? I found the same issue and had to use the purchaseUpdatedListener to retrieve the purchase details instead of the hooks

[hyochan]

This is a known issue in the iOS Sandbox environment. The Sandbox environment can be unreliable and sometimes doesn't return purchase results properly.

As mentioned in the comments:

"Does it behave the same in a none sandbox environment? I found the same issue and had to use the purchaseUpdatedListener to retrieve the purchase details instead of the hooks"

Solutions

1. Use v14+ with onPurchaseSuccess callback (Recommended)

In v14+, use the useIAP hook with callbacks:

import { useIAP } from 'react-native-iap';

const { requestPurchase, finishTransaction } = useIAP({
  onPurchaseSuccess: async (purchase) => {
    // This is more reliable than watching currentPurchase
    console.log('Purchase received:', purchase);
    await finishTransaction({ purchase, isConsumable: false });
  },
  onPurchaseError: (error) => {
    console.log('Purchase error:', error);
  },
});

2. Use purchaseUpdatedListener directly

If you need more control:

import { purchaseUpdatedListener, finishTransaction } from 'react-native-iap';

useEffect(() => {
  const subscription = purchaseUpdatedListener(async (purchase) => {
    console.log('Purchase received:', purchase);
    // Process and finish transaction
  });

  return () => subscription.remove();
}, []);

3. Test in Production/TestFlight

Sandbox has known issues. Always verify behavior in TestFlight or production before concluding there's a bug.

Note on Version

If you're using v12/v13, please upgrade to v14+ which has improved purchase handling:

• Migration Guide (v13 to v14)