# SBX vs Contrast X

The clearest difference is update cadence: Contrast X at every 2 months against SBX's every 13 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.

SBX ships an update every 13 months, Contrast X every 2 months. The most recent releases landed on October 24, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | SBX | Contrast X |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/sbx/id1450946790/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 31 MB | 25 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [StrongBox](https://appshunter.io/developer/1450946789) | [NEODREAM LLC](https://appshunter.io/developer/1550915825) |

## What reviewers say

### SBX

[App page](https://appshunter.io/ios/app/sbx/id1450946790)

Easily book fitness classes, manage your membership, and stay updated on the latest offerings. Make reservations, join waitlists, and purchase class packages directly from your device.

**Highlights:** Book fitness classes, Manage membership status, Purchase class packages, Join waitlists, View profile, Stay updated on products/services

**Features:** macOS Compatibility

**In-app purchases:** none


### Contrast X

[App page](https://appshunter.io/ios/app/contrast-x/id6757217166)

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

**In-app purchases:** none


## Frequently asked questions

### Is SBX free?

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

### Is Contrast X free?

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

### Do SBX or Contrast X have ads?

Neither SBX nor Contrast X shows ads.

### Which is updated more often, SBX or Contrast X?

SBX ships an update every 13 months, and Contrast X every 2 months. Most recently, SBX was updated on October 24, 2026 and Contrast X on September 22, 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.*