Configure In-App Purchases for iOS

I'm seeking an experienced developer to configure in-app purchases for my mobile application, which offers a subscription-based learning service. The configuration is needed for both iOS and iPadOS platforms.

Key Requirements:
- Set up in-app purchases for quarterly subscriptions
- Implement promotional offers for subscriptions
- Ensure seamless integration with the App Store for both iOS and iPadOS

Ideal Skills and Experience:
- Proven experience in configuring in-app purchases on iOS and iPadOS
- Familiarity with App Store Connect and subscription management
- Ability to implement promotional offers effectively
- Strong understanding of Apple's guidelines and requirements for in-app purchases

If you have the expertise to handle this project, I look forward to your bid!