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More and more home athletes want a smart device to help their sports performance. We put six different and different priced smart devices in a strict comparison. The cheapest devices cost only 20 euros. You don’t necessarily need an additional device to monitor activity and sports performance, as just a smartphone is enough. With its acceleration sensors, the phone can record information about the steps taken if it is in a pocket or, for example, in a belt or arm holster.

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