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subscription growth
Expert guides on mobile subscriptions, A/B testing, paywall optimization, and proven strategies to maximize your app revenue.
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FeaturedMulti-Currency Analytics + PostHog Integration
View revenue in any currency with a single click, monitor Google Play RTDN health in real time, and send subscription data straight to PostHog.
FeaturedApple Fiscal Calendar 2026: All Payment Dates for App Developers
Complete Apple Fiscal Calendar 2026 with all payout dates. Know exactly when Apple pays developers - updated quarterly with fiscal year end dates and payment schedules.
FeaturedPaywall Design Examples and UI/UX Techniques to Drive More Subscriptions
Learn the rules and best practices of converting app paywalls, look at the best paywall examples and build amazing paywalls with Qonversion!
FeaturedWhat Does Restore Purchase Mean? Complete Guide for iOS & Android
Learn what Restore Purchase means, why it won't double charge you, and how to implement the restore purchases button on iOS and Android apps. Step-by-step guide with code examples.
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Articles by Suren
7 articles

Receipt Validation in StoreKit 1 vs StoreKit 2: Exploring the New App Store Server API to Validate Receipts
Receipt Validation in StoreKit 1 (the Original StoreKit) was done with verifyReceipt Endpoint. Now, in StoreKit 2 there's App Store Server API, learn more

Why and How to Migrate Your App from StoreKit 1 to StoreKit 2
We're digging into the reasons and methods to migrate your app from Original Storekit (Storekit 1) to Storekit 2. We also share the bugs in Storekit.

WWDC22 Overview: How To Integrate and Migrate In-App Purchases to App Store Server API
App Store Server API, how to integrate and migrate in-app subscriptions into API, and how to sign JSON Web Tokens and verify signed transactions

Cross-platform In-app Subscription Management Guide: How to Manage Subscribers’ Access Across iOS, Android, and Web
Authenticate users across mobile and web and manage real-time subscription statuses to unlock access to premium content.
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What’s new with in-app purchases: WWDC 2022 overview
In this article, we’ll walk you through the improvements that have already been covered: enhancements to StoreKit 2 and App Store Server API.

Fixing SKErrorDomain Error 0: What You Need to Know
SKErrordomain error 0 in-app purchase error meaning and tips to solve it

A Deep Dive into StoreKit 2 Capabilities
This article will cover what's new in StoreKit 2 and discuss the difference between the updated framework and its previous version - StoreKit.
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