# Lock butler vs 卡拉拉APP

The clearest difference is iOS requirement: 卡拉拉APP at 12.0 against Lock butler's 15.1. 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.

## The numbers

| Metric | Lock butler | 卡拉拉APP |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 days | — |
| Size | 39 MB | 67 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Guangzhou Kuodao Internet of Things Technology Co., Ltd.](https://appshunter.io/developer/1196125665) | [宁波天顺智能科技有限公司](https://appshunter.io/developer/1840335250) |

## What reviewers say

### Lock butler

[App page](https://appshunter.io/ios/app/lock-butler/id1481023560)

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

**In-app purchases:** none


### 卡拉拉APP

[App page](https://appshunter.io/ios/app/app/id6752638544)

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

**In-app purchases:** none


## Frequently asked questions

### Is Lock butler free?

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

### Is 卡拉拉APP free?

卡拉拉APP is free to download, with no in-app purchases.

### Do Lock butler or 卡拉拉APP have ads?

Neither Lock butler nor 卡拉拉APP shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*