1. the sheet is summoned when the webapp sends the app postmessage with { name: 'upgradeUser', value: userId, appleSubscriptionId }
2. when the sheet closes , the app can send the webview a postmessage with {name: 'upgradedUser', isSuccess: bool, userId}
3. webapp receives postmessage and upgrades the user for the session
4. on payment success storekit can send a webhook with the userid to the kinopio-server. kinopio-server, verifies the webhook and updates the user db so the user is upgraded for all sessions

POST SERVER_URL/billing/webhooks-apple

[`https://api.kinopio.club](<http://api.kinopio.club/>)/billing/webhooks-apple`

[<https://650a-35-128-25-127.ngrok-free.app>](<https://650a-35-128-25-127.ngrok-free.app/>)/billing/webhooks-apple

5. when payment is cancelled later on, storekit can send a webhook with the userid to the kinopio-server. kinopio-server verifies the webhook and updates the user db and they'll be un-upgraded from their next session

App Store Connect tasks

• [x] pirijan: add webhook urls https://developer.apple.com/help/app-store-connect/configure-in-app-purchase-settings/enter-server-urls-for-app-store-server-notifications
• [x] pirijan: set up any iap billing bank stuff
• [x] lucas or pirijan: set up iap monthly and yearly subscriptions plans ($8/month, $80/year)
• [x] pirijan update pricing help doc (non urgent, later)

Other stuff

• [x] student discounts and referral credits are not available in the ios app, so hide those
• [x] update help site price page
• [ ] Q: @Lucas one thing i'm also not sure of , when we resubmit the app with a new build do we have to continue the same app review response thread (eg do we have to send vids etc.) , or does resubmitting get us a whole new app review?
• [ ] pirijan: after testing, remove console.logs from server /webhooks-apple

Polar Sight TEMP – Kinopio