# Logic Master vs Cdk

The clearest difference is in-app purchases: Cdk at none against Logic Master's 10. Logic Master's advantage is update cadence (weekly vs monthly) and iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Logic Master sells 10 one-off in-app purchases. Cdk asks for nothing beyond the download.

Logic Master ships an update weekly, Cdk monthly. The most recent releases landed on October 17, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Logic Master | Cdk |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (118 ratings)](https://appshunter.io/ios/app/logic-master-brain-puzzles/id1194911580/reviews)** | — |
| Number of ratings | **118** | — |
| Positive reviews | 91.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 62 MB | 235 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Burak Sendag](https://appshunter.io/developer/542230273) | [Ville de Coudekerque-Branche](https://appshunter.io/developer/1477200260) |

## What reviewers say

### Logic Master

[App page](https://appshunter.io/ios/app/logic-master-brain-puzzles/id1194911580)

Engage your mind with a collection of over 200 unusual and tricky puzzles designed to challenge your cognitive abilities. Improve attention, memory, and problem-solving skills with creative gameplay and absurd solutions.

**Highlights:** 200+ unusual and tricky puzzles, Cognitive skill evaluation, Global leaderboards, Offline play, Creative problem-solving, Hand-drawn graphics

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Hints | $0.99 | one-time |
| 5 Hints | $0.99 | one-time |
| 10 Hints | $1.99 | one-time |
| Remove ads | $1.99 | one-time |
| Starter Pack | $3.99 | one-time |
| Half Price Offer | $4.99 | one-time |
| Low Coins Offer | $4.99 | one-time |
| 100 Hints | $9.99 | one-time |
| Mega Pack | $14.99 | one-time |
| Unlock all hints | $19.99 | one-time |


### Cdk

[App page](https://appshunter.io/ios/app/cdk-quiz/id6740033495)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Logic Master free?

Logic Master is free to download, with in-app purchases available.

### Is Cdk free?

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

### Do Logic Master or Cdk have ads?

Neither Logic Master nor Cdk shows ads.

### Which is updated more often, Logic Master or Cdk?

Logic Master ships an update weekly, and Cdk monthly. Most recently, Logic Master was updated on October 17, 2026 and Cdk on October 15, 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.*