# Never Blunder vs Chess Codex

The clearest difference is in-app purchases: Chess Codex at none against Never Blunder's 4. Chess Codex also leads on update cadence (every 3 days vs monthly). Never Blunder's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Never Blunder sells 4 one-off in-app purchases. Chess Codex asks for nothing beyond the download.

Never Blunder ships an update monthly, Chess Codex every 3 days. The most recent releases landed on October 2, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Never Blunder | Chess Codex |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 3 days** |
| Size | 17 MB | 36 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Umur Dincer](https://appshunter.io/developer/1126156427) | [Vince Lubbers](https://appshunter.io/developer/1889839785) |

## What reviewers say

### Never Blunder

[App page](https://appshunter.io/ios/app/never-blunder-chess-puzzle/id6757726052)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Diamonds | $2.99 | one-time |
| 200 Diamonds | $3.99 | one-time |
| 500 Diamonds | $5.99 | one-time |
| 1000 Diamonds | $9.99 | one-time |


### Chess Codex

[App page](https://appshunter.io/ios/app/chess-codex/id6778615817)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Never Blunder free?

Never Blunder is free to download, with in-app purchases available.

### Is Chess Codex free?

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

### Do Never Blunder or Chess Codex have ads?

Chess Codex shows ads; Never Blunder does not.

### Which is updated more often, Never Blunder or Chess Codex?

Never Blunder ships an update monthly, and Chess Codex every 3 days. Most recently, Never Blunder was updated on October 2, 2026 and Chess Codex on September 30, 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.*