# Hidden Numbers vs Kurotto Extreme

The clearest difference is review sentiment: Kurotto Extreme at 100% against Hidden Numbers's 0%. Kurotto Extreme also leads on rating (5.0 vs 3.0) and in-app purchases (none vs 10). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Hidden Numbers sells 10 one-off in-app purchases. Kurotto Extreme asks for nothing beyond the download.

Kurotto Extreme holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 0% of Hidden Numbers's written reviews are positive against 100% of Kurotto Extreme's.

Hidden Numbers ships an update every 81 months, Kurotto Extreme every 22 months. The most recent releases landed on June 5, 2026 and June 10, 2026 respectively.

## The numbers

| Metric | Hidden Numbers | Kurotto Extreme |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/hidden-numbers-hidden-objects/id1227396653/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/kurotto-extreme/id1499171663/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 81 months | **Every 22 months** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 20 MB | 22 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hiren Patel](https://appshunter.io/developer/914022084) | [Christophe Baranger](https://appshunter.io/developer/982794089) |

## What reviewers say

### Hidden Numbers

[App page](https://appshunter.io/ios/app/hidden-numbers-hidden-objects/id1227396653)

Engage in a visual challenge to find hidden numbers within beautiful scenes. Test your observation skills by spotting differences and racing against the clock. Unlock new packs and levels with in-app purchases.

**Highlights:** Find 10 hidden numbers, Spot differences in pictures, 30 beautiful background scenes, Use hints for assistance, Challenge other players, Share scores on social media

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| buy pack-1 | $0.99 | one-time |
| buy pack-2 | $0.99 | one-time |
| buy pack-3 | $0.99 | one-time |
| buy 10 hints | $0.99 | one-time |
| remove Ads | $1.99 | one-time |
| buy 30 hints | $1.99 | one-time |
| buy 50 hints | $2.99 | one-time |
| Full Version (all packs + remove Ads + 300 hints) | $3.99 | one-time |
| buy 100 hints | $3.99 | one-time |
| buy 200 hints | $4.99 | one-time |


### Kurotto Extreme

[App page](https://appshunter.io/ios/app/kurotto-extreme/id1499171663)

A logic puzzle game originating from Japan with simple rules for hours of engaging challenges. Fill empty cells based on numbered circles indicating continuous black cells, with no time limits and autosave functionality.

**Highlights:** 350+ challenges across 7 difficulty levels, 7 new daily challenges, Autosave progress, No time limits, 2 global leaderboards, Full tutorial

**In-app purchases:** none


## Frequently asked questions

### Is Hidden Numbers free?

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

### Is Kurotto Extreme free?

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

### Which has better reviews, Hidden Numbers or Kurotto Extreme?

Kurotto Extreme is rated higher. Hidden Numbers averages 3.0 out of 5 from 2 ratings, while Kurotto Extreme averages 5.0 from 1 ratings.

### Do Hidden Numbers or Kurotto Extreme have ads?

Both Hidden Numbers and Kurotto Extreme show ads.

### Which is updated more often, Hidden Numbers or Kurotto Extreme?

Hidden Numbers ships an update every 81 months, and Kurotto Extreme every 22 months. Most recently, Hidden Numbers was updated on June 5, 2026 and Kurotto Extreme on June 10, 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.*