# Norwegian 4x4 Protocol vs Norwegian 4x4 Timer

The clearest difference is in-app purchases: Norwegian 4x4 Timer at none against Norwegian 4x4 Protocol's 2. Norwegian 4x4 Timer also leads on rating (5.0 vs 4.6). Norwegian 4x4 Protocol's advantage is ratings volume (66 vs 4) and device support (3 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. Norwegian 4x4 Protocol sells 2 in-app purchases, starting at $8.99 per 7 days. Norwegian 4x4 Timer asks for nothing beyond the download.

Norwegian 4x4 Timer holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Norwegian 4x4 Protocol has 66 ratings behind it against 4, so its average is the more settled of the two.

Norwegian 4x4 Protocol ships an update every 2 weeks, Norwegian 4x4 Timer monthly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Norwegian 4x4 Protocol | Norwegian 4x4 Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (66 ratings)](https://appshunter.io/ios/app/norwegian-4x4-protocol-boreas/id6751464534/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/norwegian-4x4-timer/id6793446428/reviews)** |
| Number of ratings | **66** | 4 |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Freemium | **Free** |
| Size | 10 MB | 2 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Havard Tryman](https://appshunter.io/developer/1662964293) | [No Translation Layer LLC](https://appshunter.io/developer/1705015522) |

## What reviewers say

### Norwegian 4x4 Protocol

[App page](https://appshunter.io/ios/app/norwegian-4x4-protocol-boreas/id6751464534)

This app guides you through the Norwegian 4x4 interval training protocol to improve your VO2 max and cardiovascular fitness. It offers customizable warm-up and cooldown durations, voice guidance for intervals, and integrates with Apple Watch for heart rate and calorie tracking.

**Highlights:** Norwegian 4x4 workouts, Voice guidance for intervals, Apple Watch heart rate tracking, Calorie tracking, Save workouts to Health app, No sign-in required

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $8.99 | per 7 days |
| Pro | $24.99 | per year |


### Norwegian 4x4 Timer

[App page](https://appshunter.io/ios/app/norwegian-4x4-timer/id6793446428)

This free app guides users through the Norwegian 4x4 interval training protocol to improve cardio and VO2 Max. It supports various cardio activities and allows for customization of interval durations and repetitions.

**Highlights:** Norwegian 4x4 Protocol guidance, Customizable interval durations, Adjustable number of intervals, Supports various cardio activities, VO2 Max improvement focus

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Norwegian 4x4 Protocol free?

Norwegian 4x4 Protocol is free to download, with in-app purchases available.

### Is Norwegian 4x4 Timer free?

Norwegian 4x4 Timer is free to download, with no in-app purchases.

### Which has better reviews, Norwegian 4x4 Protocol or Norwegian 4x4 Timer?

Norwegian 4x4 Timer is rated higher. Norwegian 4x4 Protocol averages 4.6 out of 5 from 66 ratings, while Norwegian 4x4 Timer averages 5.0 from 4 ratings.

### Do Norwegian 4x4 Protocol or Norwegian 4x4 Timer have ads?

Neither Norwegian 4x4 Protocol nor Norwegian 4x4 Timer shows ads.

### Which is updated more often, Norwegian 4x4 Protocol or Norwegian 4x4 Timer?

Norwegian 4x4 Protocol ships an update every 2 weeks, and Norwegian 4x4 Timer monthly. Most recently, Norwegian 4x4 Protocol was updated on November 5, 2026 and Norwegian 4x4 Timer on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*