what3words presents a fundamentally different approach to global addressing by dividing the world into 57 trillion 3-meter squares, each with a unique three-word identifier. This system eliminates ambiguity in location sharing, particularly valuable in areas lacking formal addressing systems or where traditional coordinates prove cumbersome for everyday use. The app's core functionality centers on converting between geographic coordinates and memorable word combinations, creating what the developers term 'a universal address system.' The application offers robust navigation features including turn-by-turn directions through integration with Apple Maps and other navigation services. Users can save favorite locations, share addresses via multiple platforms (including messaging apps and social media), and use the compass view for precise on-foot navigation. The offline maps capability ensures functionality in areas with poor connectivity, while the recent addition of voice command support allows for hands-free operation during navigation scenarios. User experience demonstrates particular strength in cross-language communication scenarios, as evidenced by traveler ishii106's July 2025 review describing its utility for coordinating meet-ups with English speakers in Japan. The interface maintains simplicity with a clean design that prioritizes the three-word input field, while providing quick access to saved locations and sharing options. Real-world usage patterns show particularly strong adoption among international travelers, emergency services coordinating response efforts, and delivery services navigating to precise locations in areas with inadequate addressing systems. User feedback consistently highlights the app's precision and ease of use, with STS1673 noting in May 2025 how quickly groups adopt the system once introduced. Timothy VII's review emphasizes the value of specifying exact meeting spots, while Roberto Incognito's July 2025 comment reflects the transformative impact many users report. The 4.78-star rating across thousands of reviews indicates strong user satisfaction, though some technical reviews note occasional synchronization issues between the word database and mapping data. The system's primary strength lies in its global standardization and memorability compared to coordinate systems, though limitations include dependency on the proprietary word database and the learning curve for new users. Ideal use cases include emergency location sharing, rural property navigation, event coordination at large venues, and precise delivery location specification. The app performs exceptionally well in scenarios requiring exact location communication across language barriers or in areas with poor addressing infrastructure.