# Find Difference(World Hardest) vs 6 Differences

The clearest difference is ads: 6 Differences at none against Find Difference(World Hardest)'s shown. Find Difference(World Hardest)'s advantage is update cadence (every 3 months vs every 43 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Find Difference(World Hardest) ships an update every 3 months, 6 Differences every 43 months. The most recent releases landed on September 24, 2026 and August 23, 2026 respectively.

## The numbers

| Metric | Find Difference(World Hardest) | 6 Differences |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 months** | Every 43 months |
| Size | 100 MB | 131 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [AVECTOR TECH CO., LTD.](https://appshunter.io/developer/585564224) | [Hieu Hoang](https://appshunter.io/developer/1108291419) |

## What reviewers say

### Find Difference(World Hardest)

[App page](https://appshunter.io/ios/app/find-differenceworld-hardest/id1516953106)

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

**In-app purchases:** none


### 6 Differences

[App page](https://appshunter.io/ios/app/6-differences-spot-them/id1628381817)

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

**In-app purchases:** none


## Frequently asked questions

### Is Find Difference(World Hardest) free?

Find Difference(World Hardest) is free to download, with no in-app purchases.

### Is 6 Differences free?

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

### Do Find Difference(World Hardest) or 6 Differences have ads?

Find Difference(World Hardest) shows ads; 6 Differences does not.

### Which is updated more often, Find Difference(World Hardest) or 6 Differences?

Find Difference(World Hardest) ships an update every 3 months, and 6 Differences every 43 months. Most recently, Find Difference(World Hardest) was updated on September 24, 2026 and 6 Differences on August 23, 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.*