# Norwegian 4x4 Timer — VO2 max interval protocol

> VO2 max interval protocol (iPhone/iPad app by No Translation Layer LLC.)

- Source: https://appshunter.io/ios/app/norwegian-4x4-timer/id6793446428 (this page in markdown: same URL + `.md`)
- Developer: [No Translation Layer LLC](https://appshunter.io/developer/1705015522)
- Category: Sports, Health & Fitness
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 2 MB
- Languages: American English
- Released: 2026-08-21
- Data updated: 2026-08-29
- User reviews in markdown: https://appshunter.io/ios/app/norwegian-4x4-timer/id6793446428/reviews.md

## What is Norwegian 4x4 Timer?

Norwegian 4x4 Timer is a simple, free app to guide you through intervals for the Norwegian 4x4 Protocol. It can also be customized to adjust interval durations and number. Use it to amp up your cardio and VO2 Max. 

Whether it's running, rowing, jump rope, cycling, or other forms of cardio training, this is your trusted companion to know when to push yourself and when to rest in your interval workout.


## Version history (last 1 release)

### 1.0.0 — 2026-08-21

No release notes.

## More apps by No Translation Layer LLC

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- [Later - Set Intentions](https://appshunter.io/ios/app/later-set-intentions/id6742691976)
- [Barley - Workout Tracker](https://appshunter.io/ios/app/barley-workout-tracker/id6752520791)

All apps by No Translation Layer LLC: https://appshunter.io/developer/1705015522

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-29.*