App launch took over 8 seconds, causing high churn.

Reduced launch time to 2 seconds, boosting retention by 15%.

Frequent UI jank during scrolling.

Implemented async rendering, achieving 60 fps smooth scroll.

Memory leaks caused crashes on older devices.

Refactored retain cycles, eliminating crashes and improving stability.

Network calls blocked the main thread.

Moved API requests to background queues, improving responsiveness.

Large image assets slowed rendering.

Adopted image caching and lazy loading, cutting load times by 40%.