Is nRF51822 suitable for fitness tracking?

[Jeff]

Since it does not have DMA or FPU, are there power or processing issues for using an accelerometer to do step counting, sleep tracking, and other fitness features? I do not want to use a separate CPU to handle the accelerometer. Does anyone know of a commercial product that uses nRF51822 for fitness tracking?

[kirkus]

Our team used MetaWear as a rapid prototyping platform for our custom wearable and were extremely impressed with performance as well as battery life; the nRF51 is very well-suited to fitness tracking scenarios. We are doing gesture detection in the firmware using a 6-axis IMU and nRF51 easily handles our calculations. As Øyvind mentioned, with the nRF52 you have even more power available if your use case requires heavy floating-point number crunching.