# CORE40 vs kor FIT SF

The clearest difference is update cadence: CORE40 at every 5 weeks against kor FIT SF's every 10 months. CORE40 also leads on device support. 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.

CORE40 ships an update every 5 weeks, kor FIT SF every 10 months. The most recent releases landed on October 16, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | CORE40 | kor FIT SF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (9 ratings)](https://appshunter.io/ios/app/core40/id718323094/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | **Every 5 weeks** | Every 10 months |
| Monetization | Ad-supported | — |
| Size | 195 MB | 187 MB |
| Requires iOS | 16.0 | **14.0** |
| Devices | **iPhone, iPad** | — |
| Age rating | 4+ | 4+ |
| Developer | [CORE40 Studios](https://appshunter.io/developer/1750848800) | [kor fit sf llc](https://appshunter.io/developer/1746291453) |

## What reviewers say

### CORE40

[App page](https://appshunter.io/ios/app/core40/id718323094)

Plan and schedule fitness classes directly from your mobile device. View class schedules, sign up for sessions, and access studio location information. Easily connect to social media pages.

**Highlights:** View class schedules, Sign up for classes, Studio location information, Social media links, Optimize class booking

**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 CORE40 free?

CORE40 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, CORE40 or kor FIT SF?

CORE40 ships an update every 5 weeks, and kor FIT SF every 10 months. Most recently, CORE40 was updated on October 16, 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.*