(Closer to 100% – better)
We tested a day’s worth of steps tracking by wearing one wearable on each wrist. Since we can only wear two trackers on one individual wrist at any time for the most accurate result possible, we tested different wearables on different days, using the iPhone 6s Plus’ built-in Health app as the control factor. We did not feed the data from the wearables to the Health app, and each number came from their respective proprietary tracking apps.
We determine if the tracker is relatively more accurate by comparing its score to the day’s average score - an average of the trackers used and the iPhone 6s Plus. The Xiaomi Mi Band Pulse came within 0.02 percent of the average score, beating the TomTom Spark Cardio + Music’s 0.04-percent difference.