iOS introductory offer: not sure about expiration dates, prices, texts [Flutter]

Hey ​@daniel-s-296ea8 ,

Regarding introductory offers, it’s configuration(s) and trials, there are a few things to consider:

• Introductory offers (e.g like a 3-day free trial) must first be configured in App Store Connect.

• RevenueCat’s SDK will automatically apply the offer when the user is eligible. No extra setup is needed on the Flutter side beyond the existing IAP/subscription configuration.

• Important: the offer is applied at the App Store level and not by RevenueCat. If the offer isn’t applied, check:

  • the user hasn't used an intro offer for this subscription group;

  • you’ve allowed up to 24h for propagation after product changes

Once the subscription is purchased, RevenueCat will:

• contain/update the CustomerInfo (context here) object includes the accurate expiration date, whether it includes a trial or not. Your extension can depend on this.

• the post-trial price is shown in the regular price field.

• the introductoryPrice (documentation reference here) will contain:

  • price: e.g. $0.00

  • period: e.g. P3D

  • cycles: 1

• Use checkTrialOrIntroDiscountEligibility() to check for eligibility and show “3-day free trial” UI where appropriate.

As for trial duration and their behavior in Sandbox and Testflight, you can reference:

• RevenueCat Working with Subscriptions section
• Apple’s “Testing subscriptions and in-app purchases in TestFlight”

Sandbox is best for repeat able trial tests, but make sure you use the “Clear Purchase History” toggle in device settings. As for TestFlight, trials are applied only if the Apple ID is eligible and eligibility does not reset between installs or builds.

Things to lookout for:

• Don’t expect a product price = 0.0 in the StoreProduct. The “free” trial is in introductoryPrice, but the base price is the post-trial cost.

• Trial eligibility is store-determined. RevenueCat’s introEligibilityStatus is best-effort and may not always match the App Store’s logic.

• If a user has used a trial in this subscription group, they will not be eligible again—even if switching products.

• Make sure you've uploaded your In-App Purchase Key to RevenueCat. It’s essential for accurate StoreKit 2 behavior and expiration data tracking.

I hope this helps! You can find some extra details and context in our documentation - I recommend giving it a look to make sure everything lines up for your specific use case, but this should help you get started.

Extra context:

• Free Trials & Promo Offers
• Setting up Subscription Offers
• iOS Subscription Offers

Best,