# Hidden Differences vs Poly Worlds

The clearest difference is in-app purchases: Poly Worlds at none against Hidden Differences's 2. Hidden Differences's advantage is update cadence (daily vs weekly) and iOS requirement (12.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Hidden Differences sells 2 one-off in-app purchases. Poly Worlds asks for nothing beyond the download.

Hidden Differences ships an update daily, Poly Worlds weekly. The most recent releases landed on October 14, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Hidden Differences | Poly Worlds |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Daily** | Weekly |
| Size | 190 MB | 191 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Brownberry Technologies](https://appshunter.io/developer/1631344164) | [BugFix Games Entertainment](https://appshunter.io/developer/1689361525) |

## What reviewers say

### Hidden Differences

[App page](https://appshunter.io/ios/app/hidden-differences-find-them/id6738427940)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| More Lives | $4.99 | one-time |
| Remove Ads | $14.99 | one-time |


### Poly Worlds

[App page](https://appshunter.io/ios/app/poly-worlds-hidden-object/id6749450133)

**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 Poly Worlds free?

Poly Worlds is free to download, with no in-app purchases.

### Do Hidden Differences or Poly Worlds have ads?

Both Hidden Differences and Poly Worlds show ads.

### Which is updated more often, Hidden Differences or Poly Worlds?

Hidden Differences ships an update daily, and Poly Worlds weekly. Most recently, Hidden Differences was updated on October 14, 2026 and Poly Worlds 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.*