Comparison

KNOW HK vs Relay | Communicator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

KNOW HK

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
Read full description

KNOW HOUSEKEEPING helps automate daily housekeeping activities, resulting in dramatic increase in productivity and large savings in housekeeping costs. This easy-to-use software automates and simplifies a number of time consuming housekeeping tasks like setting the room cleaning sequence, providing attendants with guest preference information, tracking room attendants, updating rooms status in the PMS and so on. The system enables hotels to go green by helping them set up and manage environmentally friendly cleaning programs as standard or based on guest preferences. The software reduces paper consumption and eliminates hundreds of phone calls between the housekeeping desk, floor staff and front office. KNOW HOUSEKEEPING allows the following for housekeeping supervisors: * 360 degree view of the section * Turn around rush rooms faster * Re-assign rooms with a press of a button * Receive inspection alerts * Report a discrepancy * Cater to guest’s special requests * Easy access to check lists & SOPs KNOW HOUSEKEEPING allows the following for housekeeping attendants: * Information on room to clean next * Complete guest info: preferences, specials, pax, etc * SOPs for quick reference * Send alerts to supervisors * Direct room status update in PMS

About

Relay | Communicator

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
Read full description

Relay turns the phone in your pocket into the most capable radio your team has ever carried. Built for frontline teams who don't work at desks, Relay puts push-to-talk, worker safety, and real-time location on one screen. Nationwide range. No line of sight. No dead channels. PUSH TO TALK, ANYWHERE Push to talk and your voice reaches your whole channel instantly, whether they're across the building or across the country. Switch channels in a tap and catch what you missed. Live Audio keeps the conversation running in the background while you work. CHAT AND PHOTOS WHEN VOICE ISN'T RIGHT Send text to a channel or directly to a teammate, right alongside the voice traffic in the same conversation. And now you can send photos, too — snap the broken fixture, the spill, the delivery, the whiteboard, and share it in seconds. Some things are so much faster to show than to describe. EVERYONE UNDERSTANDS EVERYONE Language shouldn't slow a team down. TeamTranslate translations appear right in the conversation, so a multilingual crew works as one. PANIC, WITH SOMEONE ON THE OTHER END Slide to confirm and Relay broadcasts a panic alert with your live location to the people who can actually respond. Responders acknowledge, follow your location as you move, and resolve the incident once you're safe. It's the difference between an alarm and a lifeline. INCIDENTS, DISPATCHED AND DOCUMENTED Dispatch an incident with a single button, mapped to the workflows your organization has already built. Track it as it unfolds, add details along the way, review the full message history, and close it out with a resolution. Every incident is kept in history for the review that comes later. FIND ANYONE, INSIDE OR OUT Outdoor maps place your team across a site or a city. Indoor positioning takes it further — the right building, the right floor, the right room — so "where are you?" stops being a question. Geofence alerts let you know the moment someone crosses a boundary that matters. YOUR ATTENTION, ON YOUR TERMS Availability Modes put you in control of what reaches you and when. Choose Available to hear everything as it comes in, Critical Alerts to let only the urgent stuff through while you focus, or Silenced for quiet when you need it. One tap to switch, so you're never fumbling with settings mid-shift. BUILT FOR THE WORK YOU DO Manufacturing floors, hotels, casinos, hospitals, campuses, golf courses, and large venues. Wherever your team moves, Relay moves with them. Relay is made for organizations running on the Relay platform. An active Relay account is required to sign in — check with your administrator, or visit relaypro.com to learn more.

Screenshots

KNOW HK4 screens
Relay | Communicator4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
KNOW HK versus Relay | Communicator: the parameters behind the verdict, then further details
ParameterKNOW HKRelay | Communicator
PriceFreeFree
Rating5.0 (3 ratings) — better4.9 (437 ratings)
Positive reviews—75.0% of reviews
Number of ratings3437 — better
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad
Requires iOS12.0 — better16.6
Further details — not scored
Size43 MB79 MB
Age rating4+4+
DeveloperKnowcross LtdRelay, Inc

Customer experience

KNOW HK

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Relay | Communicator

All ratings437 ratings
Positive98.4%
Neutral0.5%
Negative1.1%
Written reviews8 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

In-app purchases

None

KNOW HK

No in-app purchases

None

Relay | Communicator

No in-app purchases

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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