In-app purchases: Share user In-App purchases between Android and iOS

Question

I\'m planning to add In-App purchases to my Productivity app. Enhanced features are purchase products (e.g., freemium). I would like to have user access to purchased featur

Answer 1

I'd like to add a note about subscriptions. Here's the quote from Apple guide:

Cross-Platform Considerations

Product identifiers are associated with a single app. Apps that have both an iOS and macOS version have separate products with separate product identifiers on each platform. You could let users who have a subscription in an iOS app access the content from an macOS app (or vice versa), but implementing that functionality is your responsibility. You would need some system for identifying users and keeping track of what content they’ve subscribed to, similar to what you would implement for an app that uses non-renewable subscriptions

Link to Apple docs: https://developer.apple.com/library/content/documentation/NetworkingInternet/Conceptual/StoreKitGuide/Chapters/Subscriptions.html

Quote from Android docs:

You can also build on your existing external subscriber base from inside your Android apps

• If you sell subscriptions on a web site, for example, you can add your own business logic to your Android app to determine whether the user has already purchased a subscription elsewhere, then allow access to your content if so or offer a subscription purchase from Google Play if not.
• You can implement your own solution for sharing subscriptions across as many different apps or products as you want ...

Link to Android docs: https://developer.android.com/google/play/billing/billing_subscriptions.html

At the moment of writing this answer (May 23, 2017) Windows Store doesn't have subscriptions but they were announced during the latest BUILD conference. Some details here and here Subscriptions should be available later this summer.