# Ultimate Challenge App vs Open

The clearest difference is update cadence: Open at every 2 weeks against Ultimate Challenge App's every 4 months. Ultimate Challenge App's advantage is iOS requirement (13.0 vs 15.0). 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.

Ultimate Challenge App ships an update every 4 months, Open every 2 weeks. The most recent releases landed on February 24, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | Ultimate Challenge App | Open |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Size | 160 MB | 30 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Active Connections Ltd](https://appshunter.io/developer/1015144091) | [Elaros](https://appshunter.io/developer/1544802505) |

## What reviewers say

### Ultimate Challenge App

[App page](https://appshunter.io/ios/app/ultimate-challenge-app/id6469605832)

**Features:** macOS Compatibility

**In-app purchases:** none


### Open

[App page](https://appshunter.io/ios/app/open-oh/id6502186049)

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

**In-app purchases:** none


## Frequently asked questions

### Is Ultimate Challenge App free?

Ultimate Challenge App is free to download, with no in-app purchases.

### Is Open free?

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

### Do Ultimate Challenge App or Open have ads?

Neither Ultimate Challenge App nor Open shows ads.

### Which is updated more often, Ultimate Challenge App or Open?

Ultimate Challenge App ships an update every 4 months, and Open every 2 weeks. Most recently, Ultimate Challenge App was updated on February 24, 2026 and Open on September 6, 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.*