Choosing a system
There are four ways spas do this, and they are not really competing on the same thing. Two are hardware you install, one is a device per person, and one is the group chat you already have. We make the fourth kind, and this page is still worth reading if you buy one of the others.
The short version: a spa has one requirement nobody else has, and most of these were designed for businesses that do not have it.
A microphone and ceiling speakers
Everyone hears everything, including the guest on the table. Cheap, already in a lot of buildings, and the worst possible fit for a room somebody paid to be quiet in.
Cost shape: Cheap to keep, expensive in reviews.
A button by the door, a light in the corridor
Fast, dependable, and it says almost nothing: a light is on, somewhere, for some reason. No who, no what, no record. Moving a room means moving the wiring.
Cost shape: Hardware plus installation, then again when you change the layout.
A belt unit per person, a base station at the desk
Reaches a person rather than a room, which is the right instinct. But it is one more device to buy, charge, lose and replace, and the answer never comes back to whoever sent it.
Cost shape: Per unit, plus the ones that go missing.
Whatever your team already has
Free, instant, and everyone already knows how. It also reaches everybody at once so people stop reading it, has no idea what a treatment room is, and lives on staff personal phones.
Cost shape: Free, and it costs attention instead.
The fourth kind
A signal names who it is for, what is needed and where: guest ready, Treatment 2, to the therapist. It lands on that screen with a soft tone, one tap acknowledges it, and the answer travels back to whoever sent it. Nothing plays overhead.
Because it is software, the things that make hardware expensive stop applying. Moving a treatment room is renaming a button. Adding a location is not a second installation. And it is the only one of the four you can try this afternoon and abandon by Friday having spent nothing.
Before you buy anything
The only question a spa has that other businesses do not. If the answer is ever yes, the rest of the comparison does not matter.
A light means something is happening. A signal that names a person, an action and a room means somebody can act on it without asking a follow-up question.
If the sender cannot tell whether anybody picked it up, they will go and check. That walk is the cost you were trying to remove.
Wiring makes a layout permanent. Ask what a change costs before you buy, not after.
Anything living inside one building stops at its walls. If you might open another site, this is the question that decides for you.
Month to month with nothing installed is a different commitment from a hardware contract. Ask what leaving costs on day one.
A side-by-side version of this lives on the comparison page, and the screens question is answered on which tablets to buy.
Questions
Any way of telling a member of staff something without walking to find them: a guest is ready, a room needs turning, a therapist is running five minutes over. In a spa it has one extra requirement that a warehouse or a restaurant does not have, which is that the guest must not hear it happen.
Almost never, and the reason is commercial rather than technical. A guest paying for an hour of quiet has bought the absence of exactly that sound. Overhead paging is built for places where being heard everywhere is the point, and a spa is the opposite of one.
More than the quote, because the quote is for the hardware. There is also the wiring, the installation, the disruption while it happens, and the fact that moving a treatment room later means paying someone to move it. Ask what changing your layout in two years costs before you sign.
Plenty of spas do, and it works until it does not. A group message goes to everyone, so people start ignoring it; nobody can tell who has seen it; and it puts staff on their personal phones and into an app full of everything else. It also has no idea what a room is.
An app-based system takes under ten minutes to set up and nothing to install. That is the real difference from every other option on this page: you can try it during one shift and stop if it does not suit you, without having paid anyone to drill anything.
No credit card, nothing to install, and nobody drills anything. Start on two screens.