# Odd One Out Puzzle vs Flash Focus

The clearest difference is in-app purchases: Odd One Out Puzzle at none against Flash Focus's 1. Odd One Out Puzzle also leads on ads (none vs shown) and iOS requirement (11.0 vs 14.0). Flash Focus's advantage is update cadence (every 2 months vs every 9 months). On price and device support there is nothing between them.

Both are free to download. Flash Focus sells 1 one-off in-app purchase. Odd One Out Puzzle asks for nothing beyond the download.

Odd One Out Puzzle ships an update every 9 months, Flash Focus every 2 months. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Odd One Out Puzzle | Flash Focus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (13 ratings)](https://appshunter.io/ios/app/odd-one-out-puzzle/id6456835772/reviews)** | — |
| Number of ratings | **13** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 9 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 16 MB | 94 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Appulet, Inc](https://appshunter.io/developer/1164224103) | [Fawqah](https://appshunter.io/developer/1853928056) |

## What reviewers say

### Odd One Out Puzzle

[App page](https://appshunter.io/ios/app/odd-one-out-puzzle/id6456835772)

Test your observation skills by finding the unique image among a set of similar ones. Race against the clock to complete each challenge and discover all the hidden differences.

**Highlights:** Identify unique images, Timed challenges, Observation skills test, Fast-paced gameplay, Multiple image sets

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

**In-app purchases:** none


### Flash Focus

[App page](https://appshunter.io/ios/app/flash-focus-train-your-brain/id6755442521)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove All Ads | $2.99 | one-time |


## Frequently asked questions

### Is Odd One Out Puzzle free?

Odd One Out Puzzle is free to download, with no in-app purchases.

### Is Flash Focus free?

Flash Focus is free to download, with in-app purchases available.

### Do Odd One Out Puzzle or Flash Focus have ads?

Flash Focus shows ads; Odd One Out Puzzle does not.

### Which is updated more often, Odd One Out Puzzle or Flash Focus?

Odd One Out Puzzle ships an update every 9 months, and Flash Focus every 2 months. Most recently, Odd One Out Puzzle was updated on October 14, 2026 and Flash Focus 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.*