# key  door vs Door 3rd

The clearest difference is update cadence: Door 3rd at every 3 weeks against key  door's every 3 months. Door 3rd also leads on iOS requirement (13.0 vs 15.0). 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.

key  door ships an update every 3 months, Door 3rd every 3 weeks. The most recent releases landed on September 14, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | key  door | Door 3rd |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (2 ratings)](https://appshunter.io/ios/app/key-door/id1481830717/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 4 MB | 30 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [胜 邓](https://appshunter.io/developer/1368398791) | [建宁 陈](https://appshunter.io/developer/1176148064) |

## What reviewers say

### key  door

[App page](https://appshunter.io/ios/app/key-door/id1481830717)

This application allows users to remotely control rolling shutter doors, including raising, lowering, and locking them. It provides a convenient way to manage access and security for your property.

**Highlights:** Control rolling shutter door, Raise door function, Lower door function, Lock door function, Remote access

**In-app purchases:** none


### Door 3rd

[App page](https://appshunter.io/ios/app/door-3rd/id6749929614)

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

**In-app purchases:** none


## Frequently asked questions

### Is key  door free?

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

### Is Door 3rd free?

Door 3rd is free to download, with no in-app purchases.

### Do key  door or Door 3rd have ads?

Neither key  door nor Door 3rd shows ads.

### Which is updated more often, key  door or Door 3rd?

key  door ships an update every 3 months, and Door 3rd every 3 weeks. Most recently, key  door was updated on September 14, 2026 and Door 3rd on September 24, 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.*