# Lock Tool vs chmod util

The clearest difference is update cadence: Lock Tool at every 3 months against chmod util's every 63 months. Lock Tool also leads on iOS requirement (12.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Lock Tool ships an update every 3 months, chmod util every 63 months. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Lock Tool | chmod util |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 63 months |
| Size | 19 MB | 2 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Zhixin Wulian Technology Co., Ltd.](https://appshunter.io/developer/1521588847) | [Mattia Righetti](https://appshunter.io/developer/1513841416) |

## What reviewers say

### Lock Tool

[App page](https://appshunter.io/ios/app/lock-tool/id1419601294)

**Features:** macOS Compatibility

**In-app purchases:** none


### chmod util

[App page](https://appshunter.io/ios/app/chmod-util/id1581290826)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Lock Tool free?

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

### Is chmod util free?

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

### Do Lock Tool or chmod util have ads?

Neither Lock Tool nor chmod util shows ads.

### Which is updated more often, Lock Tool or chmod util?

Lock Tool ships an update every 3 months, and chmod util every 63 months. Most recently, Lock Tool was updated on November 2, 2026 and chmod util on November 7, 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.*