# Brain Test vs Twindoku

The clearest difference is in-app purchases: Twindoku at none against Brain Test's 1. Twindoku also leads on iOS requirement (15.0 vs 18.6). Brain Test's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. Brain Test sells 1 one-off in-app purchase. Twindoku asks for nothing beyond the download.

Brain Test ships an update every 4 days, Twindoku every 5 days. The most recent releases landed on October 12, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Brain Test | Twindoku |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (6 ratings)](https://appshunter.io/ios/app/twindoku/id6806900906/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Every 5 days |
| Monetization | — | Ad-supported |
| Size | 14 MB | 165 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kamlesh Shingarakhiya](https://appshunter.io/developer/1885601076) | [Oakever Games](https://appshunter.io/developer/1658671470) |

## What reviewers say

### Brain Test

[App page](https://appshunter.io/ios/app/brain-test-mastermind-puzzle/id6775718748)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads & Unlimited Hints | $4.99 | one-time |


### Twindoku

[App page](https://appshunter.io/ios/app/twindoku/id6806900906)

A pure logic puzzle game where you fill a grid with two symbols based on a set of rules. Each level has a single, provable solution, and hints explain the deduction process. Mistakes cost hearts but can be undone.

**Highlights:** Pure logic puzzle gameplay, Provable solutions, no guessing, Progressive rule stacking, Interactive hints with explanations, Mistake system with hearts, Varied grid shapes

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

**In-app purchases:** none


## Frequently asked questions

### Is Brain Test free?

Brain Test is free to download, with in-app purchases available.

### Is Twindoku free?

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

### Do Brain Test or Twindoku have ads?

Twindoku shows ads; Brain Test does not.

### Which is updated more often, Brain Test or Twindoku?

Brain Test ships an update every 4 days, and Twindoku every 5 days. Most recently, Brain Test was updated on October 12, 2026 and Twindoku on October 11, 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.*