YI IoT serves as the dedicated control application for YI's international version smart cameras, positioning itself in the competitive home surveillance market as a budget-conscious option for remote monitoring. The application enables real-time video streaming and two-way audio communication, functioning as a bridge between users and their connected camera hardware through standard Wi-Fi connections. The application's core functionality centers around live video monitoring with a 111° wide-angle lens perspective, providing broader coverage than standard camera views. Digital zoom capabilities allow users to double-tap for 4x magnification to examine details within the frame. The platform supports multiple user access simultaneously, enabling shared monitoring among family members. Cloud connectivity facilitates remote access from any location, though certain advanced features require subscription services that have drawn user criticism regarding pricing structure. User experience varies significantly based on network conditions and hardware generation. The interface presents a straightforward dashboard showing connected devices with quick access to live view and recorded footage. Performance reports indicate smooth operation on stable Wi-Fi networks, though some users report latency issues and lag during connectivity fluctuations. The setup process follows standard IoT device pairing protocols, though the application specifically excludes compatibility with China-market hardware, requiring alternative applications for those devices. User feedback reveals polarized experiences, with positive reviews highlighting value proposition and functionality. Bruce Adams II (2025-09-01) noted the cameras represent 'the best bang for your buck' with professional-grade zoom capabilities. SANDEEP. S (2025-09-06) praised the two-way communication for child monitoring, noting simultaneous parent access works effectively. Conversely, Kimmie Ivens (2025-09-02) criticized the subscription model as 'overpriced' and reported performance issues with older hardware, describing the experience as 'laggy' compared to alternatives. The application demonstrates strengths in basic monitoring functionality and multi-user support, particularly for users seeking affordable entry into home surveillance. Limitations emerge around subscription-dependent features and performance consistency across hardware generations. Ideal use cases involve straightforward monitoring scenarios where users accept the freemium model constraints and possess compatible international version hardware with reliable network infrastructure.