# OpenAppLock vs Fourfold

The clearest difference is in-app purchases: OpenAppLock at none against Fourfold's 2. Fourfold's advantage is iOS requirement (17.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Fourfold sells 2 one-off in-app purchases. OpenAppLock asks for nothing beyond the download.

OpenAppLock ships an update every 2 weeks, Fourfold every 11 days. Both last shipped on November 10, 2026.

## The numbers

| Metric | OpenAppLock | Fourfold |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (9 ratings)](https://appshunter.io/ios/app/openapplock/id6780259647/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 11 days** |
| Monetization | Free | — |
| Size | 13 MB | 110 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Brendan Chen](https://appshunter.io/developer/1610821430) | [Noctral](https://appshunter.io/developer/1835250697) |

## What reviewers say

### OpenAppLock

[App page](https://appshunter.io/ios/app/openapplock/id6780259647)

This app helps you regain control of your screen time by blocking specific applications. You can set schedules, time limits, or open limits for apps, and even create custom rules to prevent unwanted usage.

**Highlights:** Block apps on a schedule, Set time or open limits, Preset and custom rules, Lock rule edits

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases:** none


### Fourfold

[App page](https://appshunter.io/ios/app/fourfold-watch-squares/id6801167891)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 7-Day Trial | Free | one-time |
| Fourfold Pro | $7.99 | one-time |


## Frequently asked questions

### Is OpenAppLock free?

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

### Is Fourfold free?

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

### Do OpenAppLock or Fourfold have ads?

Neither OpenAppLock nor Fourfold shows ads.

### Which is updated more often, OpenAppLock or Fourfold?

OpenAppLock ships an update every 2 weeks, and Fourfold every 11 days. Most recently, OpenAppLock was updated on November 10, 2026 and Fourfold on November 10, 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.*