Norwegian 4x4 Coach
Heart-rate interval coaching
About
This app guides you through the Norwegian 4x4 interval workout using your real heart rate. It provides spoken cues and target heart rate ranges to ensure you train at the correct intensity without needing to constantly check your screen.
What's New in Norwegian 4x4 Coach
1.2
June 27, 2026
More accurate startup coaching: the coach no longer tells you to ease off while your heart rate is still below the target range, including right after the sensor connects. New: an optional Nag mode in Settings repeats a cue while you are still out of range. The app version now shows in Settings and How it works. Plus minor refinements.
MoreFAQ
What is the Norwegian 4x4 Coach workout?
The Norwegian 4x4 Coach guides you through a specific interval workout consisting of a warm-up, four 4-minute work intervals at a hard effort, three recovery periods, and a cool-down. The app uses your live heart rate to ensure you are training at the correct intensity.
Does Norwegian 4x4 Coach require a heart rate sensor?
Yes, Norwegian 4x4 Coach requires a Bluetooth heart-rate sensor to function. It is compatible with sensors like Polar H10, Verity Sense, OH1, and standard Bluetooth chest straps.
Can I customize the Norwegian 4x4 Coach workout?
Yes, the app is fully configurable. You can customize your maximum heart rate, target heart rate ranges, phase durations, and the number of intervals to suit your fitness level and goals.
Does Norwegian 4x4 Coach collect my data?
No, Norwegian 4x4 Coach collects no data. Your heart rate is used only on your device in real time and is never stored off-device or transmitted. There is no tracking, analytics, or account required.
Can I export my workout data from Norwegian 4x4 Coach?
Yes, you can export a full session, including heart rate over time, phase and round information, and target zones. This data can be shared via Messages, Mail, Files, or an AI assistant for analysis.
What devices does Norwegian 4x4 Coach support?
Norwegian 4x4 Coach is currently supported on iPhone. It requires a Bluetooth heart-rate sensor to operate.
How often is Norwegian 4x4 Coach updated?
The latest version of Norwegian 4x4 Coach is 1.2, which was last updated on June 27, 2026. Updates typically focus on improving performance and adding new features based on user feedback.
Is Norwegian 4x4 Coach suitable for beginners?
Norwegian 4x4 Coach is a fitness tool and high-intensity exercise carries risk. It is recommended to consult a physician before beginning any new exercise program. The app's configurable nature allows for adjustments to suit different fitness levels.
