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Secure In-App Purchases for Seamless Subscriptions

We successfully implemented the in-app purchase feature, enabling seamless subscription management for users. This feature allows users to purchase and renew subscriptions while ensuring their transactions are verified and securely stored.

Problem Statement

Our application lacked a robust in-app purchase system to manage user subscriptions effectively. Challenges included verifying user transactions, handling subscription expiry dates, and maintaining an optimized flow to enhance user experience. Additionally, initial SDK configurations were incomplete, causing delays in development.

Solution

  • API Implementation : Developed an API to validate user subscriptions by verifying transaction receipts. The API identifies the latest active subscription and provides data to display appropriate purchase options on the UI.
  • Optimization : Focused on optimizing the API for fast response times and reliability to enhance the overall user experience.
  • SDK Configuration Fix : Resolved SDK configuration issues to unblock development and ensure proper validation of subscription receipts.
  • Collaborative Testing : Partnered with the QA team to rigorously test the feature and address edge cases.

Feature List

01
Transaction Verification

Validation of user transactions with stored receipts.

02
Subscription Status Updates

Display of current subscription status and expiry date on the user interface.

03
Purchase Flow

User-friendly interface for new subscriptions and renewals.

04
Error Handling

Robust error management to ensure seamless functionality even under failure scenarios.

Tech and Solution Stack

Backend

Optimized API for subscription validation.

SDKs

Integrated Google Play Console and Cloud Console SDKs for accessing and managing subscription data.

Cloud Integration

Used cloud services for secure and scalable data management.

Hosting

The feature is hosted on a scalable cloud platform to ensure reliability and performance. Integration with Google Play Console ensures real-time transaction validation.

Team & Support

This project required close collaboration with the Neo4j team, who provided essential Cypher queries and valuable insights on efficient data handling. Their expertise in optimising large datasets helped implement the logic for batch processing and ensured the archival process did not impact Neo4j’s performance.

  • Development : Led backend development, focusing on API implementation and SDK configuration.
  • Frontend : Collaborated with the frontend team to design an intuitive and attractive user interface.
  • Quality Assurance : Worked closely with QA to test the feature extensively and resolve identified issues.
  • Client Support : Required client assistance to provide credentials and access to the Google Play Console and Cloud Console.

Maintenance

To ensure continued success:

  • Regular monitoring of API performance and optimization.
  • Timely updates to SDKs and integration points.
  • Continuous testing to address potential edge cases and improve reliability.

Key Achievements

  • Resolved SDK configuration issues, unblocking development and ensuring timely delivery.
  • Implemented a fast, secure, and scalable API to handle in-app purchases.
  • Delivered a seamless purchase flow that enhances user satisfaction and boosts subscription revenue.
  • Fostered effective collaboration across teams to overcome challenges and deliver the feature within the sprint timeline.