4x4 Treadmill is a fitness app that coaches users through high-intensity treadmill interval workouts based on the Norwegian 4x4 method. It features real-time heart rate monitoring, live coaching, workout analytics, and VO2max estimation, making it suitable for fitness enthusiasts aiming to improve cardiovascular health.
4x4 Treadmill is a Health & fitness product. It guides users through scientifically structured treadmill interval workouts to improve cardiovascular fitness. It is built as a consumer product for fitness enthusiasts and athletes. 4x4 Treadmill is free to use. It runs on the web and iOS.
Behind 4x4 Treadmill is Proglab AS, based in the United States, and the product first shipped in 2026. PulseGate's similarity index finds few close equivalents — 4x4 Treadmill occupies a relatively distinct niche. Key capabilities include interval training, heart rate monitoring, and live coaching. The interface is available in English and Norwegian.
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