# Norwegian 4x4 Timer vs IAASK

The clearest difference is update cadence: IAASK at every 4 days against Norwegian 4x4 Timer's fortnightly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Norwegian 4x4 Timer ships an update fortnightly, IAASK every 4 days. The most recent releases landed on October 14, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Norwegian 4x4 Timer | IAASK |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/norwegian-4x4-timer/id6793446428/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 4 days** |
| Monetization | Free | — |
| Size | 2 MB | 44 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [No Translation Layer LLC](https://appshunter.io/developer/1705015522) | [Umut Atagun](https://appshunter.io/developer/1833702508) |

## What reviewers say

### 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


### IAASK

[App page](https://appshunter.io/ios/app/iaask/id6797671992)

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

**In-app purchases:** none


## Frequently asked questions

### Is Norwegian 4x4 Timer free?

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

### Is IAASK free?

IAASK is free to download, with no in-app purchases.

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

Neither Norwegian 4x4 Timer nor IAASK shows ads.

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

Norwegian 4x4 Timer ships an update fortnightly, and IAASK every 4 days. Most recently, Norwegian 4x4 Timer was updated on October 14, 2026 and IAASK on October 9, 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.*