# X vs kor FIT SF

The clearest difference is update cadence: X at every 3 weeks against kor FIT SF's every 10 months. kor FIT SF's advantage is iOS requirement (14.0 vs 16.0). On price and in-app purchases there is nothing between them.

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

X ships an update every 3 weeks, kor FIT SF every 10 months. The most recent releases landed on October 24, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | X | kor FIT SF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (445 ratings)](https://appshunter.io/ios/app/x-core/id1510988573/reviews)** | — |
| Number of ratings | **445** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | **Every 3 weeks** | Every 10 months |
| Monetization | Ad-supported | — |
| Size | 38 MB | 187 MB |
| Requires iOS | 16.0 | **14.0** |
| Devices | **iPhone** | — |
| Age rating | 4+ | 4+ |
| Developer | [X-Core, LLC](https://appshunter.io/developer/1479474176) | [kor fit sf llc](https://appshunter.io/developer/1746291453) |

## What reviewers say

### X

[App page](https://appshunter.io/ios/app/x-core/id1510988573)

Book fitness classes, manage waitlists, and purchase class packages. Experience high-intensity, low-impact cardio and strength training designed to burn fat and build muscle efficiently.

**Highlights:** Book classes, View waitlist status, Purchase class packages, Pre-buy goodies, High-intensity cardio, Low-impact strength training

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

**In-app purchases:** none


### kor FIT SF

[App page](https://appshunter.io/ios/app/kor-fit-sf/id6502638826)

**In-app purchases:** none


## Frequently asked questions

### Is X free?

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

### Is kor FIT SF free?

kor FIT SF is free to download, with no in-app purchases.

### Which is updated more often, X or kor FIT SF?

X ships an update every 3 weeks, and kor FIT SF every 10 months. Most recently, X was updated on October 24, 2026 and kor FIT SF on October 3, 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.*