Scaling Social Audio: Twitter Spaces
Experience for Mixer Cloud iOS

Mixer Cloud sought to expand its ecosystem with interactive "Circle" features, allowing users to engage in real-time group voice conversations with modular moderation tools, providing a Twitter Spaces-like experience on iOS.

Industries

SOCIAL MEDIA, ENTERTAINMENT, REAL-TIME COMMUNICATION

Services

IOS DEVELOPMENT, RTC ENGINEERING, UI/UX OPTIMIZATION

Tools We Used

iOS SDK, Swift, WebRTC, Socket.io, Group Voice APIs

Challenges

Integrating complex group voice logic into a legacy mobile codebase without breaking existing features.
Real-time state synchronization for modular moderation and seamless speaker hand-offs.
Maintaining high-fidelity audio during high-concurrency group sessions with thousands of listeners.
Optimizing battery performance and CPU usage while maintaining active background RTC threads.

Our Solution

01- Modular Circle Architecture

Designed a highly decoupled group voice component that fits natively within the iOS app ecosystem.
Implemented a robust state management layer for synchronized moderation controls.
Optimized discovery services for low-latency circle joining.

02- Advanced RTC Tuning

Tuned the iOS AVFoundation stack for background audio resilience and high-quality recording.
Integrated advanced noise suppression and echo cancellation for mobile environments.
Implemented dynamic bitrate adaptation for varying network conditions.

03- Scalable Moderation Logic

Built "Raise Hand" and admin approval workflows for smooth transitions between listeners and speakers.
Integrated real-time analytics for room health and engagement monitoring.
Automated load balancing for high-traffic rooms across global regions.

Results

Successful launch of the 'Circle' feature on the iOS App Store with 5-star ratings.
30% increase in daily active session duration through enhanced interactivity.
Zero-lag transitions between listeners and speakers during high-activity sessions.
Optimized performance across a wide range of iPhone models and iOS versions.

Client Experience

Mixer Cloud's expansion into social audio set a new standard for their platform:

Rapid feature adoption by the existing user base.
Significant reduction in moderation complexity for group sessions.
Strengthened platform position in the competitive social audio space.

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Scaling Social Audio: Twitter Spaces Experience for Mixer Cloud iOS