# kor FIT SF vs Class With Catherine

The clearest difference is device support: Class With Catherine at 2 against kor FIT SF's —. kor FIT SF's advantage is iOS requirement (14.0 vs 16.4). On price, update cadence 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.

kor FIT SF ships an update every 10 months, Class With Catherine every 12 months. The most recent releases landed on October 3, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | kor FIT SF | Class With Catherine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (16 ratings)](https://appshunter.io/ios/app/class-with-catherine/id6670685321/reviews)** |
| Number of ratings | — | **16** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | **Every 10 months** | Every 12 months |
| Monetization | — | Free |
| Size | 187 MB | 121 MB |
| Requires iOS | **14.0** | 16.4 |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 12+ |
| Developer | [kor fit sf llc](https://appshunter.io/developer/1746291453) | [Sutra Fitness, Inc.](https://appshunter.io/developer/914371834) |

## What reviewers say

### kor FIT SF

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

**In-app purchases:** none


### Class With Catherine

[App page](https://appshunter.io/ios/app/class-with-catherine/id6670685321)

Access over 500 on-demand fitness classes for strength, HIIT, and sculpting. Find workouts tailored to your mood and body focus with quick filters. Enjoy a fun, motivating approach to wellness that celebrates movement.

**Highlights:** 500+ on-demand live classes, Strength, HIIT, Sculpt, Low Impact, Filter by body focus, time, vibe, Motivation and energy focused, Balanced lifestyle approach

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

**In-app purchases:** none


## Frequently asked questions

### Is kor FIT SF free?

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

### Is Class With Catherine free?

Class With Catherine is free to download, with no in-app purchases.

### Which is updated more often, kor FIT SF or Class With Catherine?

kor FIT SF ships an update every 10 months, and Class With Catherine every 12 months. Most recently, kor FIT SF was updated on October 3, 2026 and Class With Catherine on September 21, 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.*