RevenueCat author Jaewoong Eum

Author’s posts

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  Google I/O 2026: What’s New in Google Play and Play Billing Library 9.0

  • Engineering

  This article covers Google Play’s latest AI, billing, Play Console, analytics, and protection updates, including Play Billing Library 9.0.0 changes.

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  Announcing RevenueCat Kotlin Multiplatform SDK 3.0.0: a cleaner iOS setup

  • Engineering

  In this article, you'll explore what changed in 3.0.0 and why, the new iOS architecture, and step-by-step migration guides.

• 

  Testing subscriptions on Compose Multiplatform: one test suite for iOS and Android

  • Engineering

  In this article, you'll work through a complete subscription testing setup for a Compose Multiplatform app.

• 

  A complete guide to migrating from Google Play Billing v7 to v8 (and preparing for v9)

  • Engineering

  This article covers the Google Play Billing Library v7 to v8 migration timeline, removed APIs and replacements, updated connection/query/purchase flows, new v8–v8.3 behaviors, and how to prepare for v9.

• 

  Compose Multiplatform subscriptions: single codebase for iOS and Android

  • Engineering

  This article walks through building a Kotlin Multiplatform app with the RevenueCat KMP SDK, covering setup, purchases, entitlement gating, and server-driven paywalls using the official cat-paywalls-kmp demo structure.

• 

  Recapping App Monetization Seoul

  • Company

  Jaewoong Eum reflects on DARO and RevenueCat's app monetization event

• 

  Exit Offers in RevenueCat Paywalls: A Practical Guide for Android

  • Engineering

  This article explains how exit offers work on Android, how to configure and implement them correctly with RevenueCat, and common pitfalls that can prevent them from appearing.

• 

  Google Play’s billion-dollar billing leak: How to recover the subscribers you’re losing to payment failures

  • Growth

  A third of your Google Play cancellations aren't real churn – here's how to get them back

• 

  Kotlin Coroutine bridges: converting any callback-based Android API to suspend functions

  • Engineering

  This article explores the suspendCoroutine bridge pattern, showing how to convert callback APIs into clean suspend functions, handle diverse callback shapes, design proper error propagation, and how SDKs like RevenueCat apply it at scale.

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  The Android paywall conversion gap: why the problem isn’t your trial, it’s your funnel entrance

  • Engineering
  • Growth

  This article breaks down the Android paywall funnel, including where users drop off and how subscription options are actually selected.

• 

  Firebender now supports RevenueCat MCP and OAuth

  • Company
  • Engineering

  In this article, you'll explore how Firebender integrates with RevenueCat's MCP server, including how OAuth sign-in establishes the connection.

• 

  What Google Play’s new merchandising and optimization page means for Android developers

  • Engineering

  In this article, you'll explore what the three existing out of app merchandizing features are and how they work, what Google Play is changing by unifying them into the new Merchandizing and optimization page.