# Brain Flash vs IMPOSSIBLE RIDDLES CHALLENGE

The clearest difference is update cadence: IMPOSSIBLE RIDDLES CHALLENGE at monthly against Brain Flash's every 25 months. Brain Flash's advantage is iOS requirement (9.0 vs 13.4). On price, ads, in-app purchases and device support there is nothing between them.

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

Brain Flash ships an update every 25 months, IMPOSSIBLE RIDDLES CHALLENGE monthly. The most recent releases landed on October 6, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Brain Flash | IMPOSSIBLE RIDDLES CHALLENGE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (26 ratings)](https://appshunter.io/ios/app/brain-flash-mind-training/id1062164869/reviews)** | — |
| Number of ratings | **26** | — |
| Positive reviews | 56.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 25 months | **Monthly** |
| Monetization | Free | — |
| Size | 56 MB | 88 MB |
| Requires iOS | **9.0** | 13.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [PPCLINK Software](https://appshunter.io/developer/833424538) | [NGUYEN DUC HIEU](https://appshunter.io/developer/762617890) |

## What reviewers say

### Brain Flash

[App page](https://appshunter.io/ios/app/brain-flash-mind-training/id1062164869)

Engage your mind with six unique mini-games designed to boost cognitive abilities. Test your reflexes, memory, and pattern recognition in fast-paced challenges.

**Highlights:** Rock-paper-scissors with color rules, Speed card matching, True color perception challenge, Conditional tapping game, Directional swipe game, Identify unique patterns

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

**In-app purchases:** none


### IMPOSSIBLE RIDDLES CHALLENGE

[App page](https://appshunter.io/ios/app/impossible-riddles-challenge/id6478904975)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Brain Flash free?

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

### Is IMPOSSIBLE RIDDLES CHALLENGE free?

IMPOSSIBLE RIDDLES CHALLENGE is free to download, with no in-app purchases.

### Do Brain Flash or IMPOSSIBLE RIDDLES CHALLENGE have ads?

Neither Brain Flash nor IMPOSSIBLE RIDDLES CHALLENGE shows ads.

### Which is updated more often, Brain Flash or IMPOSSIBLE RIDDLES CHALLENGE?

Brain Flash ships an update every 25 months, and IMPOSSIBLE RIDDLES CHALLENGE monthly. Most recently, Brain Flash was updated on October 6, 2026 and IMPOSSIBLE RIDDLES CHALLENGE on October 1, 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.*