# Core Harmony vs Curf Studio

The clearest difference is ads: Curf Studio at none against Core Harmony's shown. Curf Studio also leads on update cadence (fortnightly vs every 3 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Core Harmony ships an update every 3 months, Curf Studio fortnightly. The most recent releases landed on September 30, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Core Harmony | Curf Studio |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Fortnightly** |
| Size | 123 MB | 68 MB |
| Requires iOS | **14.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CHM PILATES COMPANY LIMITED](https://appshunter.io/developer/1804094295) | [Gymmo Healthtech](https://appshunter.io/developer/1736067991) |

## What reviewers say

### Core Harmony

[App page](https://appshunter.io/ios/app/core-harmony/id6743706197)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### Curf Studio

[App page](https://appshunter.io/ios/app/curf-studio/id6810127040)

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

**In-app purchases:** none


## Frequently asked questions

### Is Core Harmony free?

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

### Is Curf Studio free?

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

### Do Core Harmony or Curf Studio have ads?

Core Harmony shows ads; Curf Studio does not.

### Which is updated more often, Core Harmony or Curf Studio?

Core Harmony ships an update every 3 months, and Curf Studio fortnightly. Most recently, Core Harmony was updated on September 30, 2026 and Curf Studio on October 13, 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.*