How to detect expired auto renewable subscriptions?

I’m currently using react-native-iap 4.5.0 and fetching my subscriptions with RNIap.getAvailablePurchases()

Also on my back-end server I’m requesting to https://sandbox.itunes.apple.com/verifyReceipt Apple endpoint for receipts.

That endpoint returns all receipts with this data. With some logic I can handle subscription status of my users at back-end. But it is more complicated in some situations.

{
                "quantity": "1",
                "product_id": "XXX",
                "transaction_id": "1000000694388870",
                "original_transaction_id": "1000000692806652",
                "purchase_date": "2020-07-14 15:06:37 Etc/GMT",
                "purchase_date_ms": "1594739197000",
                "purchase_date_pst": "2020-07-14 08:06:37 America/Los_Angeles",
                "original_purchase_date": "2020-07-17 10:42:15 Etc/GMT",
                "original_purchase_date_ms": "1594982535000",
                "original_purchase_date_pst": "2020-07-17 03:42:15 America/Los_Angeles",
                "expires_date": "2020-07-14 15:11:37 Etc/GMT",
                "expires_date_ms": "1594739497000",
                "expires_date_pst": "2020-07-14 08:11:37 America/Los_Angeles",
                "web_order_line_item_id": "1000000054037348",
                "is_trial_period": "false",
                "is_in_intro_offer_period": "false"
            },

My questions is; How can I use only my app to check subscription’s expire status without back-end service?

[camel113]

I guess you could validate a subscription with the following code:

const result = await validateReceiptIos(receiptBody, true);
const lastSubscriptionBasic = result.latest_receipt_info
        .filter(item => item.product_id === "subscription_basic") // keep only the "subscription_basic" subscriptions
        .sort((a, b) => b.expires_date_ms - a.expires_date_ms)[0]; // sort by expiration date and get the first one
const isSubscriptionBasicValid = lastSubscriptionBasic.expires_date_ms > moment() // check if expiration date is before now

[stale[bot]]

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