The TCS Sydney Marathon mobile application serves as the official digital companion for one of Australia's premier sporting events, providing comprehensive race-day functionality for both participants and spectators. Developed by PONT3 PTY LTD, this iOS application positions itself as an essential tool for enhancing the marathon experience through digital integration. The application's core functionality centers around its proprietary live tracking system, which monitors participants' progress through timing chips without requiring them to carry mobile devices during the race. This feature is complemented by detailed interactive course maps showing elevation changes, hydration stations, and medical points. Social media integration allows users to share runner progress and post-race selfies with custom marathon frames, while the information hub provides essential details about start times, wave allocations, and post-race logistics. User experience demonstrates thoughtful design with intuitive navigation organized into clear sections for tracking, course information, and social features. The interface employs a clean, minimalist design with quick-loading maps and real-time data updates. During actual event usage, spectators typically utilize the tracking functionality to monitor specific runners' progress along the 42.2km course, while participants access pre-race information and post-race photo sharing capabilities. With no user reviews available at publication, the application's 4.8-star rating suggests strong user satisfaction, though specific feedback patterns cannot be analyzed. The absence of detailed user commentary prevents examination of common praise or criticism points that typically emerge from mass participation events. The application's primary strength lies in its phone-free tracking technology, which addresses a significant pain point for serious runners, while its comprehensive event information consolidation provides value for international participants unfamiliar with Sydney's course layout. Limitations include platform exclusivity to iOS devices and functionality largely confined to race-day usage rather than year-round training integration. The app serves most effectively for registered participants, their supporters, and event volunteers seeking real-time coordination during the marathon event.