# GAF Smart Lock vs langolink

The clearest difference is update cadence: langolink at every 3 weeks against GAF Smart Lock's every 20 months. GAF Smart Lock's advantage is iOS requirement (10.0 vs 12.0). 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.

GAF Smart Lock ships an update every 20 months, langolink every 3 weeks. The most recent releases landed on October 6, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | GAF Smart Lock | langolink |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 3 weeks** |
| Size | 16 MB | 61 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [广东必达保安系统有限公司](https://appshunter.io/developer/1252551530) | [Guangzhou LANGO Electronics Technology Co., Ltd](https://appshunter.io/developer/1625799941) |

## What reviewers say

### GAF Smart Lock

[App page](https://appshunter.io/ios/app/gaf-smart-lock/id1614945765)

**In-app purchases:** none


### langolink

[App page](https://appshunter.io/ios/app/langolink/id6448139872)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GAF Smart Lock free?

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

### Is langolink free?

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

### Do GAF Smart Lock or langolink have ads?

Neither GAF Smart Lock nor langolink shows ads.

### Which is updated more often, GAF Smart Lock or langolink?

GAF Smart Lock ships an update every 20 months, and langolink every 3 weeks. Most recently, GAF Smart Lock was updated on October 6, 2026 and langolink on October 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.*