# Hidden Differences vs Math World

The clearest difference is in-app purchases: Math World at none against Hidden Differences's 5. Math World also leads on update cadence (every 3 days vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Hidden Differences sells 5 in-app purchases, starting at $4.99 per 7 days. Math World asks for nothing beyond the download.

Hidden Differences ships an update every 3 months, Math World every 3 days. The most recent releases landed on October 14, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Hidden Differences | Math World |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (18K ratings)](https://appshunter.io/ios/app/hidden-differencesspot-and-find/id1521738956/reviews)** | — |
| Number of ratings | **18K** | — |
| Positive reviews | 49.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 423 MB | 77 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Azur Interactive Games Limited](https://appshunter.io/developer/1296347323) | [Lee Hendricks](https://appshunter.io/developer/1792461451) |

## What reviewers say

### Hidden Differences

[App page](https://appshunter.io/ios/app/hidden-differencesspot-and-find/id1521738956)

Engage in a captivating photo hunt adventure to find subtle discrepancies between two seemingly identical images. Utilize keen observation skills to uncover hidden objects and advance through diverse, beautifully rendered locations. This game offers a relaxing yet challenging experience for puzzle enthusiasts.

**Highlights:** Find 5 differences between pictures, Explore 70+ stunning locations, Discover 3500+ unique items, Over 1400 photo hunt quests, Highly detailed graphics, Relaxing soundtrack

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Subscription | $4.99 | per 7 days |
| Find hidden objects with hints | $1.99 | one-time |
| No ads | $2.99 | one-time |
| 15 hints | $4.99 | one-time |
| 70 hints | $19.99 | one-time |

**What reviewers like**

- 🎨 Beautiful graphics
- 🧠 Challenging puzzles
- 🕰️ Relaxing gameplay
- 👍 Fun and entertaining

**What reviewers complain about**

- 💸 Excessive ads
- 🤑 Expensive subscription
- 🤯 Repetitive images
- 🤔 Lack of difficulty options

**Reported bugs**

- Crashes and freezes
- Issues with closing the app

**Requested features**

- Add difficulty levels
- Improve ad frequency and duration
- Provide a one-time purchase option


### Math World

[App page](https://appshunter.io/ios/app/math-world/id6740997726)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Hidden Differences free?

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

### Is Math World free?

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

### Do Hidden Differences or Math World have ads?

Both Hidden Differences and Math World show ads.

### Which is updated more often, Hidden Differences or Math World?

Hidden Differences ships an update every 3 months, and Math World every 3 days. Most recently, Hidden Differences was updated on October 14, 2026 and Math World on October 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.*