# QR Doorbell - KNOC — The private no-hardware bell

> Virtual QR code doorbell for receiving visitor messages without hardware. (iPhone/iPad app by JOSE ANTONIO CAMPOS.)

- Source: https://appshunter.io/ios/app/qr-doorbell-knoc/id6763100409 (this page in markdown: same URL + `.md`)
- Developer: [JOSE ANTONIO CAMPOS](https://appshunter.io/developer/1895162747)
- Category: Utilities, Lifestyle
- Price: Free with in-app purchases
- Rating: 5.00/5 from 4 App Store ratings · 1 written reviews indexed
- Age rating: 12+
- Requires: iOS 17.0 · 20 MB
- Languages: American English, Filipino, French (France), Indonesian, Brazilian Portuguese, European Spanish
- Released: 2026-06-25
- Data updated: 2026-08-17
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/qr-doorbell-knoc/id6763100409/reviews.md

## What is QR Doorbell?

KNOC is a simple QR doorbell for homes, offices, rentals, studios, and small spaces.

Create a door, print or share its QR code, and let visitors leave a knock without installing an app. Owners can receive visitor messages, view door activity, and reply from the KNOC app.

KNOC is built for simple, practical door communication:

• Create a QR doorbell for a real door or location
• Let visitors scan and leave a message without an account
• Receive knocks from visitors when they arrive
• Reply to visitors from your phone
• Use text, photos, or audio when available
• Manage your doors and account in one place

KNOC does not require special doorbell hardware. It is designed for people who want a lightweight way to know who came by and respond without installing cameras, wiring devices, or asking visitors to download an app.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Key features

- Create QR code doorbells
- Visitor messaging without app
- Receive knock notifications
- Reply to visitors from phone
- Support text, photos, audio
- Manage doors and account

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| KNOC Pro Yearly | $24.99 | per year |
| KNOC Pro Monthly | $2.99 | per month |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/qr-doorbell-knoc/id6763100409/reviews.md

### 5/5 — Wow this is great

*2026-08-11*

This is Amazing! Makes my front entrance look clean and the updates and phone notifications is exactly what I needed! This is gold mine

## Frequently asked questions about QR Doorbell

### What is KNOC?

KNOC is a virtual doorbell that uses QR codes. It allows visitors to leave messages by scanning a QR code you create for your door, without needing to download an app themselves.

### How does KNOC work?

You create a QR code for your door via the KNOC app. Visitors scan this code with their phone's camera to leave a message, which you then receive and can reply to within the KNOC app.

### Does KNOC require special hardware?

No, KNOC is designed to be a no-hardware solution. It eliminates the need for traditional doorbell wiring or cameras.

### Can visitors leave messages with KNOC?

Yes, visitors can scan the QR code and leave messages using text, photos, or audio (if available) without needing to install any application.

### What are the subscription plans for KNOC Pro?

KNOC offers 'KNOC Pro Monthly' for $2.99 and 'KNOC Pro Yearly' for $24.99. These plans likely unlock additional features or increase usage limits.

### Is KNOC available on Android devices?

Based on the provided data, KNOC is currently supported on iPhones. Information regarding Android availability is not specified.

### How often is KNOC updated?

The latest version of KNOC is 1.1.2, last updated on August 10, 2026. This indicates a recent update, suggesting active development.

### What is the age rating for KNOC?

KNOC has an age rating of 12+, making it suitable for users aged 12 and older.

## Version history (last 3 releases)

### 1.1.2 — 2026-08-10

Bug fixes & improvements:
Continued Early Access improvements for live audio calls
Improved door creation, naming, and editing
Kept door-flow actions clear above navigation
Strengthened call reliability and end-state handling

### 1.1.1 — 2026-07-04

Improved messaging, door setup, and app stability.

### 1.1 — 2026-06-25

No release notes.

## Related topics

[aqara doorbell](https://appshunter.io/ios/topics/aqara-doorbell) · [google doorbell](https://appshunter.io/ios/topics/google-doorbell) · [ding dong doorbell](https://appshunter.io/ios/topics/ding-dong-doorbell) · [aiwit video doorbell](https://appshunter.io/ios/topics/aiwit-video-doorbell)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-17.*