# CodeAB vs Advanced Dual N

The clearest difference is update cadence: Advanced Dual N at every 2 weeks against CodeAB's every 6 weeks. Advanced Dual N also leads on iOS requirement (15.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. CodeAB sells 1 one-off in-app purchase and Advanced Dual N sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

CodeAB ships an update every 6 weeks, Advanced Dual N every 2 weeks. The most recent releases landed on October 21, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | CodeAB | Advanced Dual N |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/codeab-logic-number-puzzle/id1616021619/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 3 MB | 41 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [EssentialCapture Inc](https://appshunter.io/developer/1558967478) | [Gustavo cesar Sola Barreto Marcelino](https://appshunter.io/developer/1875104005) |

## What reviewers say

### CodeAB

[App page](https://appshunter.io/ios/app/codeab-logic-number-puzzle/id1616021619)

Test your logic and deduction skills in this addictive number puzzle game. Figure out the secret 4-digit code using hints after each guess. It's a fresh take on a classic puzzle, perfect for quick brain training.

**Highlights:** Deduction and logic gameplay, Secret 4-digit code challenge, Clues after every guess, No leading zeros or repeating digits, Quick brain training rounds, Classic Bulls & Cows style

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CodeAB | $2.99 | one-time |


### Advanced Dual N

[App page](https://appshunter.io/ios/app/advanced-dual-n-back/id6758858941)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Unlock | $3.99 | one-time |


## Frequently asked questions

### Is CodeAB free?

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

### Is Advanced Dual N free?

Advanced Dual N is free to download, with in-app purchases available.

### Do CodeAB or Advanced Dual N have ads?

Neither CodeAB nor Advanced Dual N shows ads.

### Which is updated more often, CodeAB or Advanced Dual N?

CodeAB ships an update every 6 weeks, and Advanced Dual N every 2 weeks. Most recently, CodeAB was updated on October 21, 2026 and Advanced Dual N on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*