# Hidden Numbers vs The Daily Sphinx

The clearest difference is price: The Daily Sphinx at Free against Hidden Numbers's $1.99. Hidden Numbers's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 18.0). On ads and device support there is nothing between them.

The Daily Sphinx is free to download; Hidden Numbers costs $1.99 up front. The Daily Sphinx sells 1 one-off in-app purchase. Hidden Numbers asks for nothing beyond the download.

## The numbers

| Metric | Hidden Numbers | The Daily Sphinx |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | — |
| Size | 14 MB | 36 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Michal Sajban](https://appshunter.io/developer/1523258286) | [Gal Itach](https://appshunter.io/developer/1867158254) |

## What reviewers say

### Hidden Numbers

[App page](https://appshunter.io/ios/app/hidden-numbers-math-game-pro/id1552360997)

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

**In-app purchases:** none


### The Daily Sphinx

[App page](https://appshunter.io/ios/app/the-daily-sphinx/id6800842796)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sphinx Pro Lifetime | $3.99 | one-time |


## Frequently asked questions

### Is Hidden Numbers free?

Hidden Numbers costs $1.99, with no in-app purchases.

### Is The Daily Sphinx free?

The Daily Sphinx is free to download, with in-app purchases available.

### Do Hidden Numbers or The Daily Sphinx have ads?

Neither Hidden Numbers nor The Daily Sphinx shows ads.

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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.*