# KeyBell vs Door 3rd

The clearest difference is update cadence: Door 3rd at every 3 weeks against KeyBell's every 5 months. KeyBell's advantage is iOS requirement (9.0 vs 13.0). 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.

KeyBell ships an update every 5 months, Door 3rd every 3 weeks. The most recent releases landed on October 3, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | KeyBell | Door 3rd |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.8 (13 ratings)](https://appshunter.io/ios/app/keybell/id1389766599/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 16 MB | 30 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [瑶 朱](https://appshunter.io/developer/1530216653) | [建宁 陈](https://appshunter.io/developer/1176148064) |

## What reviewers say

### KeyBell

[App page](https://appshunter.io/ios/app/keybell/id1389766599)

Monitor your home or office premises remotely with IP cameras. This free application allows for remote configuration and other useful functions to keep your property secure.

**Highlights:** Remote IP camera monitoring, Home and office premise surveillance, Remote configuration, Security monitoring

**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 KeyBell free?

KeyBell 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 KeyBell or Door 3rd have ads?

Neither KeyBell nor Door 3rd shows ads.

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

KeyBell ships an update every 5 months, and Door 3rd every 3 weeks. Most recently, KeyBell was updated on October 3, 2026 and Door 3rd 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.*