Case Study - Cross-Platform Consent Management SDK

Challenge

Our client, a leading provider of consent management solutions, needed to expand their platform coverage beyond web browsers to support the growing mobile and TV application ecosystems. They faced several critical challenges:

• Creating a consistent consent experience across highly diverse platforms
• Supporting the unique UI constraints of smart TV interfaces
• Ensuring performance in resource-constrained environments
• Navigating the complex regulatory landscape of data privacy
• Adapting to platform-specific development patterns
• Building SDKs that developers would find easy to integrate
• Maintaining feature parity with their established web solution
• Ensuring ongoing support across multiple codebases

This technical challenge was substantial: developing, deploying, and maintaining native SDKs for multiple platforms while ensuring consistent functionality, performance, and compliance.

Our Approach

We tackled this complex challenge with a systematic, architectural approach:

Architectural Foundation

• Designed a platform-agnostic consent data model aligned with global privacy standards
• Developed a consistent API design language for all SDK implementations
• Established cross-platform testing methodologies and quality standards
• Created modular components that could be tailored to platform constraints
• Implemented a unified versioning and release strategy

Technical Implementation

1. Mobile Native SDKs

   • Android SDK (Kotlin/Java)

     • Built a native SDK optimized for the Android ecosystem
     • Implemented Material Design components with customization options
     • Created adaptive layouts for different screen sizes
     • Developed efficient consent storage with encrypted SharedPreferences
     • Ensured compatibility from API level 21 (Lollipop) through current Android versions

   • iOS SDK (Objective-C/Swift)

     • Developed a dual-language SDK with Swift internals and Objective-C compatibility
     • Created UIKit-based consent interfaces with SwiftUI options
     • Implemented support for iOS privacy features (ATT, IDFA access)
     • Built lightweight persistence with proper app lifecycle management
     • Ensured compatibility from iOS 12 through current versions

2. Cross-Platform Frameworks

   • Flutter SDK

     • Developed a Flutter plugin with native platform channels
     • Created Dart API with intuitive Flutter-friendly patterns
     • Implemented custom UI components matching Flutter design language
     • Ensured proper state management and widget lifecycle integration

   • React Native SDK

     • Created a React Native module with native bridge implementation
     • Developed TypeScript definitions for improved developer experience
     • Built optional React components for quick implementation
     • Ensured proper integration with React Native navigation solutions

3. TV Platforms

   • Developed specialized SDKs for tvOS, Android TV, Tizen, and webOS
   • Created remote-control friendly navigation patterns
   • Implemented TV-optimized UI with proper focus management
   • Built performance-optimized rendering for limited resources
   • Designed simplified consent experiences appropriate for TV context

Results

The comprehensive mobile and TV SDK suite delivered significant results:

• Platform Coverage: Successfully deployed across Android, iOS, React Native, Flutter, Unity, tvOS, Android TV, Tizen, and webOS
• Market Expansion: Enabled the client to increase their serviceable market by 215%
• Developer Adoption: Over 8,500 applications implemented the SDKs within 18 months
• Performance: Maintained less than 3% impact on app startup time across all platforms
• Size Efficiency: Kept SDK sizes under 200KB for mobile and 350KB for TV platforms
• Compliance: Ensured proper implementation of GDPR, CCPA, LGPD, and other privacy regulations
• Consistency: Maintained 98% feature parity with web solution across all platforms
• Revenue Growth: Enabled 130% growth in the client's mobile/TV segment revenue

The solution demonstrates our expertise in cross-platform development, creating a coherent ecosystem of SDKs that maintained consistent functionality while embracing the unique characteristics of each platform.

Technologies Used

• Mobile Native: Swift, Objective-C, Kotlin, Java, Android Jetpack
• Cross-Platform: Flutter, React Native, JavaScript, TypeScript, Dart
• Game Engines: Unity, C#
• TV Platforms: tvOS, Android TV, Tizen SDK, webOS SDK
• Testing: XCTest, JUnit, Espresso, Flutter Test, React Testing Library
• CI/CD: Fastlane, GitHub Actions, Azure DevOps