# Harris & Fox vs Challenge Me!

The clearest difference is update cadence: Challenge Me! at fortnightly against Harris & Fox's every 12 months. Challenge Me! also leads on iOS requirement (10.0 vs 13.0). 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.

Harris & Fox ships an update every 12 months, Challenge Me! fortnightly. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Harris & Fox | Challenge Me! |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Fortnightly** |
| Size | 51 MB | 40 MB |
| Requires iOS | 13.0 | **10.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Tom Marchant](https://appshunter.io/developer/1299796941) | [Ganz digital GmbH](https://appshunter.io/developer/1447750498) |

## What reviewers say

### Harris & Fox

[App page](https://appshunter.io/ios/app/harris-and-fox/id1435338049)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### Challenge Me!

[App page](https://appshunter.io/ios/app/challenge-me/id1533032823)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Harris & Fox free?

Harris & Fox is free to download, with no in-app purchases.

### Is Challenge Me! free?

Challenge Me! is free to download, with no in-app purchases.

### Do Harris & Fox or Challenge Me! have ads?

Neither Harris & Fox nor Challenge Me! shows ads.

### Which is updated more often, Harris & Fox or Challenge Me!?

Harris & Fox ships an update every 12 months, and Challenge Me! fortnightly. Most recently, Harris & Fox was updated on November 6, 2026 and Challenge Me! on November 3, 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.*