GPS Speedometer: Speed Tracker represents a specialized utility application that leverages smartphone GPS capabilities to deliver accurate velocity measurements and comprehensive trip data. Developed by Mikhail Nikitsin, this iOS application positions itself as an elegant solution for users requiring precise speed monitoring across various transportation modalities, from bicycles to marine vessels. The application's core functionality centers on its dual-purpose design as both real-time speedometer and trip computer. The system automatically initiates tracking upon launch, capturing speed, distance covered, moving duration, and stationary intervals. Advanced metrics include calculation of average and maximum speeds throughout journeys, with all historical data aggregated for longitudinal analysis. The GPS-based approach eliminates need for additional hardware, though accuracy remains dependent on satellite signal strength and environmental conditions. User experience demonstrates thoughtful design considerations, particularly regarding readability during motion. The interface features large, clear digital displays optimized for quick glances, with intuitive navigation between real-time monitoring and historical data views. Real-world usage patterns show particular utility in scenarios where conventional speedometers fail—marine applications for propeller testing, motorcycle riding with broken gauges, or cycling performance tracking. The application maintains functionality across various speeds and environments, though urban canyon effects may temporarily impact precision. User feedback trends consistently highlight reliability and aesthetic appeal, with multiple five-star ratings spanning several years. K.ingles (March 2023) noted 'quick response time and very easy to use when we were looking to know our speed quickly,' while Tolik_man (April 2021) specifically praised its functionality as a bicycle speedometer replacement. Marine applications received validation from No Le Hace (January 2025) confirming effectiveness for boat speed testing during propeller changes. The application demonstrates notable strengths in interface elegance and functional reliability, though limitations include dependence on GPS signal availability and absence of customizable display options mentioned in user requests. Ideal use cases encompass emergency vehicle speed monitoring, recreational activity tracking, and mechanical diagnostics where traditional speed measurement systems are impractical or unavailable. Battery consumption remains consistent with other GPS-intensive applications, requiring consideration for extended journeys.