Kotlin – How to Implement In-App Review in Android

📝 Introduction

Want to ask users to rate your app without leaving it? With In-App Review API, you can show a Google Play-style rating dialog directly inside your Android app!

In this post, you’ll learn how to implement In-App Review using Kotlin and Google Play Core libraries — clean, user-friendly, and no redirects required.

🚀 What Is In-App Review?

In-App Review allows users to rate your app from inside the app itself, using the Google Play rating dialog.

✅ Seamless
✅ Official & Safe
✅ No need to open Play Store manually

⚠️ Note: Google decides when to show the dialog. It may not appear every time to prevent spam.

✅ Step-by-step: Best Way to Use In-App Review (Kotlin + KTX)

🔹 1. Add Dependency

To prompt users only after meaningful engagement (e.g., after 5 app launches or completing a specific task), you can use SharedPreferences to track usage and only call the in-app review flow after a threshold is met.

🔹 2. Track App Launch Count Using SharedPreferences

🔹 3. Request In-App Review (if Threshold Reached)

🔹 4. Call These Functions in Your MainActivity

✅ Result:

  • The review prompt will show only after 5 launches.
  • It will never repeat after one successful prompt.

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