iSMARTtrain 4.1 released - Heart Rate and Power Meter Software for macOS Posted 5/05/2017 at 22:35 UTC in Mac by gnye@amdesign.net | Permalink | Tweet Yellow Field Technologies today announces iSMARTtrain 4.1, a major update to their macOS training journal application for multi-sport and endurance athletes. iSMARTtrain allows endurance athletes to download training data, such as heart rate, cadence, speed and power, from a variety of heart rate monitors & power meters and analyse it in graph, table and list formats. Version 4.1 contains new data graphs, improved swim analysis and bug fixes, including support for more devices.