# App Lock vs 100 Dev Mistakes

The clearest difference is ads: 100 Dev Mistakes at none against App Lock's shown. App Lock's advantage is update cadence (weekly vs every 4 months) and iOS requirement (16.0 vs 26.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. App Lock sells 1 in-app purchase, starting at $2.99 per month and 100 Dev Mistakes sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

App Lock ships an update weekly, 100 Dev Mistakes every 4 months. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | App Lock | 100 Dev Mistakes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (5 ratings)](https://appshunter.io/ios/app/app-lock-lock-apps-app-locker/id6467732552/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 53 MB | 10 MB |
| Requires iOS | **16.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [小玲 黄](https://appshunter.io/developer/1651234772) | [hyunho lee](https://appshunter.io/developer/1502508537) |

## What reviewers say

### App Lock

[App page](https://appshunter.io/ios/app/app-lock-lock-apps-app-locker/id6467732552)

This app offers robust privacy and protection features for your device. Secure your applications with password or face unlock, prevent unwanted installations and deletions, and block in-app purchases. Customize restriction modes for different activities to manage screen time effectively.

**Highlights:** Password protection for apps, Prevent app installation, Prevent app deletion, Block in-app purchases, Customizable restriction modes, Face unlock support

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $2.99 | per month |


### 100 Dev Mistakes

[App page](https://appshunter.io/ios/app/100-dev-mistakes-grow-fast/id6759643878)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1달 구독 | $2.99 | per month |
| 1년 구독 | $14.99 | per year |
| 평생 구매 | $19.99 | one-time |


## Frequently asked questions

### Is App Lock free?

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

### Is 100 Dev Mistakes free?

100 Dev Mistakes is free to download, with in-app purchases available.

### Do App Lock or 100 Dev Mistakes have ads?

App Lock shows ads; 100 Dev Mistakes does not.

### Which is updated more often, App Lock or 100 Dev Mistakes?

App Lock ships an update weekly, and 100 Dev Mistakes every 4 months. Most recently, App Lock was updated on October 24, 2026 and 100 Dev Mistakes on October 29, 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.*