# Hidden Numbers vs MONSTA

The clearest difference is price: MONSTA at Free against Hidden Numbers's $1.99. MONSTA also leads on update cadence (weekly vs every 10 months) and device support (5 vs 3). Hidden Numbers's advantage is in-app purchases (none vs 10) and iOS requirement (12.0 vs 15.6). On ads there is nothing between them.

MONSTA is free to download; Hidden Numbers costs $1.99 up front. MONSTA sells 10 one-off in-app purchases. Hidden Numbers asks for nothing beyond the download.

Hidden Numbers ships an update every 10 months, MONSTA weekly. The most recent releases landed on September 13, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Hidden Numbers | MONSTA |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Weekly** |
| Size | 14 MB | 29 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac, Apple TV** |
| Age rating | 4+ | 12+ |
| Developer | [Michal Sajban](https://appshunter.io/developer/1523258286) | [Superverse Industries](https://appshunter.io/developer/1779673641) |

## 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


### MONSTA

[App page](https://appshunter.io/ios/app/monsta/id6738166396)

**Features:** Game Controller support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pack 6-10 | $0.99 | one-time |
| Pack 11-15 | $0.99 | one-time |
| Pack 26-30 | $0.99 | one-time |
| Pack 16-20 | $0.99 | one-time |
| Pack 21-25 | $0.99 | one-time |
| Pack 41-45 | $0.99 | one-time |
| Pack 31-35 | $0.99 | one-time |
| Pack 46-50 | $0.99 | one-time |
| Pack 36-40 | $0.99 | one-time |
| All Levels | $7.99 | one-time |


## Frequently asked questions

### Is Hidden Numbers free?

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

### Is MONSTA free?

MONSTA is free to download, with in-app purchases available.

### Do Hidden Numbers or MONSTA have ads?

Neither Hidden Numbers nor MONSTA shows ads.

### Which is updated more often, Hidden Numbers or MONSTA?

Hidden Numbers ships an update every 10 months, and MONSTA weekly. Most recently, Hidden Numbers was updated on September 13, 2026 and MONSTA on September 14, 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.*