# KNOW HK vs Relay | Communicator

The clearest difference is ratings volume: Relay | Communicator at 437 against KNOW HK's 3. Relay | Communicator also leads on update cadence (every 3 weeks vs every 2 months). KNOW HK's advantage is iOS requirement (12.0 vs 16.6). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for KNOW HK against 4.9 for Relay | Communicator. That said, the two scores are not equally well evidenced: Relay | Communicator has 437 ratings behind it against 3, so its average is the more settled of the two.

KNOW HK ships an update every 2 months, Relay | Communicator every 3 weeks. The most recent releases landed on September 7, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | KNOW HK | Relay | Communicator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/know-hk/id908300947/reviews)** | [4.9 (437 ratings)](https://appshunter.io/ios/app/relay-communicator/id1643141011/reviews) |
| Number of ratings | 3 | **437** |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 43 MB | 79 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Knowcross Ltd](https://appshunter.io/developer/1117325429) | [Relay, Inc](https://appshunter.io/developer/1221474222) |

## What reviewers say

### KNOW HK

[App page](https://appshunter.io/ios/app/know-hk/id908300947)

This software streamlines hotel housekeeping operations by automating tasks, providing guest preferences, and tracking room status. It helps hotels reduce costs, go green, and improve efficiency for both supervisors and attendants.

**Highlights:** Automates daily housekeeping tasks, Provides guest preference information, Tracks room attendants and status, Manages environmentally friendly cleaning programs, Reduces paper consumption and phone calls, Offers 360-degree view for supervisors, Enables direct room status updates in PMS

**Features:** macOS Compatibility

**In-app purchases:** none


### Relay | Communicator

[App page](https://appshunter.io/ios/app/relay-communicator/id1643141011)

This app provides two-way communication and location tracking for teams. It includes features like a panic button and work tracking to enhance team performance and operational efficiency.

**Highlights:** Two-way communication, Panic button, GPS tracking, Work tracking, Radio replacement

**In-app purchases:** none


## Frequently asked questions

### Is KNOW HK free?

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

### Is Relay | Communicator free?

Relay | Communicator is free to download, with no in-app purchases.

### Which has better reviews, KNOW HK or Relay | Communicator?

KNOW HK is rated higher. KNOW HK averages 5.0 out of 5 from 3 ratings, while Relay | Communicator averages 4.9 from 437 ratings.

### Do KNOW HK or Relay | Communicator have ads?

Neither KNOW HK nor Relay | Communicator shows ads.

### Which is updated more often, KNOW HK or Relay | Communicator?

KNOW HK ships an update every 2 months, and Relay | Communicator every 3 weeks. Most recently, KNOW HK was updated on September 7, 2026 and Relay | Communicator on September 18, 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.*