# Norwegian 4x4 workout vs SumCha

The clearest difference is ads: Norwegian 4x4 workout at none against SumCha's shown. Norwegian 4x4 workout also leads on update cadence (every 4 days vs every 10 days) and iOS requirement (17.0 vs 26.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Norwegian 4x4 workout sells 1 one-off in-app purchase and SumCha sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Norwegian 4x4 workout ships an update every 4 days, SumCha every 10 days. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Norwegian 4x4 workout | SumCha |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/norwegian-4x4-workout/id6762572409/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Every 10 days |
| Monetization | Free with in-app purchases | — |
| Size | 42 MB | 7 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | **iPhone, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Alice Winthrop](https://appshunter.io/developer/1894718905) | [Iksang Hwang](https://appshunter.io/developer/1712487986) |

## What reviewers say

### Norwegian 4x4 workout

[App page](https://appshunter.io/ios/app/norwegian-4x4-workout/id6762572409)

This app guides you through a structured interval workout, calculating your target heart rate zones and providing real-time coaching. It features a simple warm-up, four intense 4-minute intervals with recovery periods, and a cool-down, all managed by an integrated timer. Track your progress and sync data with Apple Health.

**Highlights:** Live heart rate zone coaching, Guided interval timer, Haptic and sound cues, Apple Watch standalone operation, Bluetooth heart rate monitor support, Apple Health integration, Fitness trend tracking

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Norwegian 4x4 | $4.99 | one-time |


### SumCha

[App page](https://appshunter.io/ios/app/sumcha-interval-running/id6819497314)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Norwegian 4x4 workout free?

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

### Is SumCha free?

SumCha is free to download, with in-app purchases available.

### Do Norwegian 4x4 workout or SumCha have ads?

SumCha shows ads; Norwegian 4x4 workout does not.

### Which is updated more often, Norwegian 4x4 workout or SumCha?

Norwegian 4x4 workout ships an update every 4 days, and SumCha every 10 days. Most recently, Norwegian 4x4 workout was updated on October 24, 2026 and SumCha on October 29, 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.*