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The application CNTD is a cycling app to provide smooth riding experience to users. In the ease of use principle, we provide users with more cycle information. We have 3 kinds of cycling interfaces: Main, Trend and Map, and the App could record the journey with map, even if you are crossing off-line areas. In the other hand, the design of Human-Bike interaction, make cycling data visualizing, and this will give you accurate and suitable experiences.In the new version we have integrated with the Health app to read your heartbeat and show heartbeat in trend menu,So you can visually see your own heart rate while riding