# Poly Worlds vs Diffora

The clearest difference is iOS requirement: Diffora at 13.0 against Poly Worlds's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Poly Worlds ships an update weekly, Diffora every 4 days. The most recent releases landed on October 10, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Poly Worlds | Diffora |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/diffora/id6761053144/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | — | Ad-supported |
| Size | 191 MB | 52 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BugFix Games Entertainment](https://appshunter.io/developer/1689361525) | [Mohammad Ihmouda](https://appshunter.io/developer/1173188081) |

## What reviewers say

### Poly Worlds

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Diffora

[App page](https://appshunter.io/ios/app/diffora/id6761053144)

A relaxing puzzle game that tests your observation skills by finding hidden differences between beautiful images. With thousands of levels and daily challenges, it's a great way to train your brain and improve focus without any pressure.

**Highlights:** Find 5+ differences per level, Thousands of unique levels, Relaxing, no-timer gameplay, Daily challenges and rewards, Offline play supported, Hints available, Regular updates with new levels

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

**In-app purchases:** none


## Frequently asked questions

### Is Poly Worlds free?

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

### Is Diffora free?

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

### Do Poly Worlds or Diffora have ads?

Both Poly Worlds and Diffora show ads.

### Which is updated more often, Poly Worlds or Diffora?

Poly Worlds ships an update weekly, and Diffora every 4 days. Most recently, Poly Worlds was updated on October 10, 2026 and Diffora on October 7, 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.*