Data as of Jul 25, 2026 · Based on 2,718,867 AI responses across 9,511 prompts · See how Parse measures this
ZoneRunnerapps.apple.com · Low evidenceZoneRunner is an iPhone app that creates personalized heart rate-based running plans by using data from Apple Watch, supporting MAF or Polarized 80/20 training systems. It calculates heart rate zones, monitors TRIMP training load, and provides recovery indicators from HRV and resting heart rate while keeping all data on the device with no accounts or tracking.
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