Why do running watches provide better GPS data than phone apps?

While phone apps can still provide decent GPS tracking for runs, especially for casual runners, dedicated running watches often offer more accurate and reliable data. There are several reasons for this:

1. GPS Chipset Quality: Running watches often use high-quality GPS chipsets specifically designed for accurate tracking of outdoor activities. These chipsets are optimized for quick and reliable satellite signal acquisition and offer better accuracy and precision compared to the GPS chipsets commonly found in smartphones.
2. Signal Strength and Antenna Placement: Running watches are typically designed to be worn on the wrist, which provides better line-of-sight to the satellites compared to a phone in a pocket or armband. The placement of the GPS antenna in a running watch is optimized for optimal satellite signal reception, leading to more accurate location tracking.
3. Firmware and Software Optimization: Running watches often have specialized firmware and software dedicated to tracking activities like running. Manufacturers of these watches invest time and resources into optimizing algorithms for GPS data processing, filtering out noise and improving accuracy. Phone apps, on the other hand, may have limited resources and may not prioritize the same level of optimization for running activities.
4. Data Sampling Rates: Running watches can typically record GPS data at higher sampling rates compared to phone apps. Respectively, every second versus every 10 seconds is considered the norm. A higher sampling rate means that the watch captures location data more frequently, resulting in a more detailed and accurate representation of your route.
5. Battery Optimization: Running watches are designed with longer battery life in mind, specifically for outdoor activities. This allows them to continuously track your run using GPS without draining the battery excessively. Phone apps, on the other hand, are generally more power-hungry and may not be able to sustain GPS tracking for the duration of a long run without significantly impacting battery life – consequently they reduce GPS sampling to conserve battery.