# K WORKOUT | KSYNC vs Musku

The clearest difference is in-app purchases: K WORKOUT | KSYNC at none against Musku's 3. K WORKOUT | KSYNC also leads on device support (4 vs 2). Musku's advantage is update cadence (every 2 days vs every 8 days). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Musku sells 3 in-app purchases, starting at $2.89 per month. K WORKOUT | KSYNC asks for nothing beyond the download.

K WORKOUT | KSYNC ships an update every 8 days, Musku every 2 days. The most recent releases landed on October 10, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | K WORKOUT | KSYNC | Musku |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/k-workout-ksync/id6752256796/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 2 days** |
| Monetization | Free | — |
| Size | 50 MB | 65 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Kintsugi LLC](https://appshunter.io/developer/1838476918) | [Julien Legrand](https://appshunter.io/developer/1896314334) |

## What reviewers say

### K WORKOUT | KSYNC

[App page](https://appshunter.io/ios/app/k-workout-ksync/id6752256796)

Discover and save personalized fitness routines, track your progress, and access a vast library of exercises. Coaches can share workouts, manage clients, and monitor engagement. Includes nutrition scanning and music stations to enhance your fitness journey.

**Highlights:** Personalized workout builder, 3,000+ exercise library, Workout sharing via link/QR, Client management for coaches, Nutrition scanning and recommendations, 40,000+ music stations, Progress tracking and analytics

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

**In-app purchases:** none


### Musku

[App page](https://appshunter.io/ios/app/musku-workout-tracker/id6766680804)

**Features:** Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Musku Premium Monthly | $2.89 | per month |
| Musku Premium | $12.99 | per year |
| Musku Premium Annual | $17.99 | per year |


## Frequently asked questions

### Is K WORKOUT | KSYNC free?

K WORKOUT | KSYNC is free to download, with no in-app purchases.

### Is Musku free?

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

### Do K WORKOUT | KSYNC or Musku have ads?

Neither K WORKOUT | KSYNC nor Musku shows ads.

### Which is updated more often, K WORKOUT | KSYNC or Musku?

K WORKOUT | KSYNC ships an update every 8 days, and Musku every 2 days. Most recently, K WORKOUT | KSYNC was updated on October 10, 2026 and Musku on October 25, 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.*