# Mastercode vs Unlock

The clearest difference is in-app purchases: Mastercode at none against Unlock's 1. Mastercode also leads on iOS requirement (13.4 vs 17). Unlock's advantage is update cadence (daily vs every 3 days). On price, ads and device support there is nothing between them.

Both are free to download. Unlock sells 1 one-off in-app purchase. Mastercode asks for nothing beyond the download.

Mastercode ships an update every 3 days, Unlock daily. The most recent releases landed on September 19, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Mastercode | Unlock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 days | **Daily** |
| Size | 26 MB | 7 MB |
| Requires iOS | **13.4** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [HECTOR FABIAN PINATARES MENDEZ](https://appshunter.io/developer/1746585331) | [Pierre Boudoin](https://appshunter.io/developer/970184186) |

## What reviewers say

### Mastercode

[App page](https://appshunter.io/ios/app/mastercode/id6504129250)

**Features:** macOS Compatibility

**In-app purchases:** none


### Unlock

[App page](https://appshunter.io/ios/app/unlock-it-safe-cracker-puzzle/id6738165926)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Version | $2.99 | one-time |


## Frequently asked questions

### Is Mastercode free?

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

### Is Unlock free?

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

### Do Mastercode or Unlock have ads?

Neither Mastercode nor Unlock shows ads.

### Which is updated more often, Mastercode or Unlock?

Mastercode ships an update every 3 days, and Unlock daily. Most recently, Mastercode was updated on September 19, 2026 and Unlock on September 12, 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.*