Android IAP Integration for Unity Game

Project: In-App Purchase (IAP) Integration for Android Unity Game

https://play.google.com/store/apps/details?id=com.Gametechnos.playtowin

Project Overview:
I need an experienced Android developer to integrate In-App Purchases (IAP) into my existing 8 Ball Pool-style mobile game. The game is already developed and running, but I want to add a store where users can buy virtual items like coins, cues, and premium

Requirements:

Integrate Google Play Billing Library (latest version).

Set up consumable purchases (e.g. coins, cues).

Set up non-consumable purchases (e.g. remove ads, premium access).

Implement subscription (optional) for VIP membership (if possible).

Create in-game store UI integration (basic layout already exists, just connect functionality).

Connect purchase results to player profile + database (Firebase preferred but open to suggestions).

Handle purchase validation and restore purchases.

Include error handling and security best practices for IAP.

Commented and clean code required for future updates.

Tech Details:

Game Engine: (Unity / Android Studio / Custom Java/Kotlin) – Specify here if known

Backend: (Firebase / Node.js / None) – Specify here

Target Platform: Android

Google Play Console already set up.

Deliverables:
Working IAP integrated with Google Play

Test purchases implemented

Documentation on how to add new products

Basic guide on release steps

Ideal Freelancer:

Experience with Google Play Billing

Has worked on game IAP integration before

Good communication & reliable delivery

Budget:

Open to fair offers based on experience. Please include:

Estimated time for completion

Relevant past work/examples

If you can do this, send me a message with:

Your experience with IAP

Links to previous similar work

Estimated timeline & cost