# Codex Numbers vs Advanced Dual N

The clearest difference is in-app purchases: Advanced Dual N at none against Codex Numbers's 4. Advanced Dual N also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Codex Numbers sells 4 one-off in-app purchases. Advanced Dual N asks for nothing beyond the download.

Codex Numbers ships an update monthly, Advanced Dual N every 3 weeks. The most recent releases landed on October 7, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Codex Numbers | Advanced Dual N |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/codex-numbers/id1050426926/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 132 MB | 39 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alaattin Bedir](https://appshunter.io/developer/924813905) | [Gustavo cesar Sola Barreto Marcelino](https://appshunter.io/developer/1875104005) |

## What reviewers say

### Codex Numbers

[App page](https://appshunter.io/ios/app/codex-numbers/id1050426926)

A logic puzzle game where players race to guess their opponent's secret code before they guess yours. Offers single-player against AI and online multiplayer modes with scoring and leaderboards.

**Highlights:** Secret code guessing gameplay, Single-player AI challenges, Online multiplayer with friends, Training mode for skill improvement, Game Center integration, Scoring and leaderboards, Timed online matches

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Online Game Packet (1000 Games) | $0.99 | one-time |
| No Ads (Remove all ads) | $1.99 | one-time |
| Middle Online Game Package (3000 Games) | $1.99 | one-time |
| Big Online Game Package (5000 Games) | $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:** none


## Frequently asked questions

### Is Codex Numbers free?

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

### Is Advanced Dual N free?

Advanced Dual N is free to download, with no in-app purchases.

### Do Codex Numbers or Advanced Dual N have ads?

Codex Numbers shows ads; Advanced Dual N does not.

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

Codex Numbers ships an update monthly, and Advanced Dual N every 3 weeks. Most recently, Codex Numbers was updated on October 7, 2026 and Advanced Dual N on October 21, 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.*