
Intervally - Interval Timer
Love HIIT
HIIT (Watch)
HIIT Interval Buddy
Workout Time!
Interval Timer (PFA)
Just Another Workout Timer
Download the Norwegian 4x4 App for scientifically-proven HIIT workouts. Transform your fitness with structured interval training. Available on iOS and Android.

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Website, pricing, platforms and company facts side by side.
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| Website | norwegian4x4.com | opalstack.com |
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| Company | Startup from Switzerland · 1 - 9 employees · 2024 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


The Norwegian 4x4 Protocol is a cutting-edge approach to exercise that can significantly boost your cardiovascular health and stamina. It consists of four intense four-minute intervals at 90-95% of your maximum heart rate, each followed by a three-minute recovery period. This scientifically...
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Norwegian 4x4 Product Demo 2024
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