# Core 57 vs 105 Fever

The clearest difference is update cadence: Core 57 at every 4 months against 105 Fever's every 19 months. On price, ads, in-app purchases and device support there is nothing between them.

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

Core 57 ships an update every 4 months, 105 Fever every 19 months. The most recent releases landed on November 7, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Core 57 | 105 Fever |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/105-fever/id6475047817/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 19 months |
| Monetization | — | Free |
| Size | 92 MB | 20 MB |
| Requires iOS | 11.0.0 | 11.0.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kolleen Losch](https://appshunter.io/developer/1507978947) | [105 FEVER, LLC](https://appshunter.io/developer/1723199180) |

## What reviewers say

### Core 57

[App page](https://appshunter.io/ios/app/core-57/id1507978948)

**Features:** macOS Compatibility

**In-app purchases:** none


### 105 Fever

[App page](https://appshunter.io/ios/app/105-fever/id6475047817)

Access your personalized member portal to sign up for classes and manage your membership. Stay informed about upcoming events and community happenings.

**Highlights:** Personalized member portal, Class sign-up, Membership management, Event notifications, Community updates

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Core 57 free?

Core 57 is free to download, with no in-app purchases.

### Is 105 Fever free?

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

### Do Core 57 or 105 Fever have ads?

Neither Core 57 nor 105 Fever shows ads.

### Which is updated more often, Core 57 or 105 Fever?

Core 57 ships an update every 4 months, and 105 Fever every 19 months. Most recently, Core 57 was updated on November 7, 2026 and 105 Fever on November 4, 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.*