The Oysta Pearl+ is a small, discreet GPS alarm designed for elderly people who still lead active lives. It can be worn as a pendant around the neck or on a wristband, and it connects to a 24/7 UK-based response centre the moment the SOS button is pressed — or when a fall is automatically detected.
Made in the UK and used by police forces and local authorities across the country, the Oysta Pearl+ has built a serious reputation in the personal safety sector. But is it the right choice for your family? We've spent weeks testing it to find out.
The Oysta Pearl+ is the best GPS alarm for active elderly users we've tested. Real-time tracking, geofencing, automatic fall detection, and a dedicated UK response centre — all in a device smaller than a matchbox. 4.5/5 stars.
Oysta Pearl+ GPS Alarm
Best GPS Alarm- UK-made and used by police forces
- Real-time GPS tracking via excellent app
- Geofencing alerts if they leave a safe zone
- Automatic fall detection built in
- 24/7 dedicated response centre (Oysta Care)
- Two-way voice communication
- Battery lasts ~3 days (needs regular charging)
- Higher monthly cost than home-only alarms
- Needs mobile signal to transmit location
Design and Feel
The first thing you notice about the Pearl+ is how small it is. It's roughly the size of a large coin — about 50mm in diameter and 15mm thick — and weighs just 40g. It doesn't look like a medical device, which matters enormously. Many older people refuse to wear traditional personal alarms because they look clinical. The Pearl+ looks more like a piece of jewellery.
It can be worn two ways: on a lanyard around the neck (included in the box) or on a wristband (available as an accessory). The wristband option is particularly good for people who don't like things dangling from their neck, or who might catch a pendant on something.
There's a single large SOS button on the front, recessed slightly to prevent accidental presses. It's big enough to find by feel alone, even for arthritic fingers. Press and hold for 3 seconds to trigger an alert.
The device is splash-resistant rather than fully waterproof — Oysta recommends removing it before showering. This is the one area where traditional pendants have an edge, as many are rated IP67 for full waterproofing.
Features: GPS, Fall Detection & Geofencing
GPS Tracking
The Pearl+ uses a combination of GPS satellites, Wi-Fi positioning, and mobile cell towers to calculate location. Outdoors with a clear view of the sky, accuracy is typically within 5–10 metres. Indoors it relies on Wi-Fi and cell towers, which brings accuracy to roughly 20–50 metres — less precise, but still enough to know which building they're in.
The Oysta app (available on both iOS and Android) shows the device's location on a map, updated every 30 seconds when tracking is active. You can check your parent's position at any time, see their location history for the past 7 days, and share access with other family members.
Fall Detection
The built-in accelerometer detects sudden impacts consistent with a fall. When a fall is detected, the device automatically sends an alert to the Oysta Care response centre — even if the wearer doesn't press the button. The response centre then calls the device to check on the person.
In our testing, fall detection was reliable for hard falls (slipping on a wet floor, tripping on a step) but occasionally missed slower, controlled falls (sliding down from a chair). This is consistent with all fall detection technology — it's designed to catch serious falls, not gentle slumps.
Geofencing
This is arguably the Pearl+'s standout feature for dementia families. Using the app, you can draw virtual boundaries on the map — around the home, around a day centre, around the local area. If the device crosses that boundary, you get an instant alert on your phone.
You can set up multiple geofences (we tested with three) and choose whether to be alerted when they leave a zone, enter a zone, or both. For families worried about wandering, this feature alone justifies the monthly cost.
Two-Way Voice
The Pearl+ has a built-in speaker and microphone, so the response centre can speak directly to the wearer without them needing to pick up a phone. Sound quality is adequate for a device this small — clear enough for conversation, though you wouldn't want to make a leisurely phone call on it.
The Response Centre
Oysta runs its own UK-based 24/7 monitoring centre called Oysta Care — the UK's first response centre built specifically for GPS personal alarms. This is a key differentiator. Most GPS alarms outsource their monitoring to generic telecare centres. Oysta's team is trained specifically for location-based emergencies.
When an alert comes in — either from a button press or automatic fall detection — the operator can immediately see the device's GPS location on their screen. They call the device to speak to the wearer, assess the situation, and decide the best course of action:
- If it's a false alarm, they reassure the person and log the call
- If the person needs help, they call the pre-listed emergency contacts
- If it's a medical emergency, they call 999 and give the ambulance service the exact GPS coordinates
- If the person is lost or confused (common with dementia), they can guide family to the exact location
In our test calls, response time was consistently under 45 seconds. The operators were calm, professional, and clearly well-trained in handling vulnerable callers.
Monthly Costs
Oysta operates an all-inclusive pricing model. Your monthly payment covers everything: the device itself (on loan), 24/7 monitoring, the built-in SIM card, the app, and all fall detection and geofencing features. There's no separate hardware purchase.
| What's Included | Details |
|---|---|
| Monthly cost | ~£25–30/month (varies by plan) |
| Device | Oysta Pearl+ GPS alarm (on loan) |
| Monitoring | 24/7 UK-based Oysta Care centre |
| SIM card | Built-in, included in price |
| App | iOS & Android — real-time tracking |
| Contract | Rolling monthly — cancel anytime |
Is it more expensive than a home alarm? Yes — roughly double the price of a basic Taking Care Home Plan (£15.99/month). But you're getting GPS tracking, geofencing, and the ability to locate your parent anywhere in the UK. For families who need that capability, it's money well spent.
Alternatives from Oysta
Oysta also offers two other devices. The Oysta Melody is a simpler, cheaper GPS alarm without fall detection — a good budget option. The Oysta Link is a higher-end device with 4G connectivity and longer battery life, designed for users who need the absolute best performance.
Pros and Cons
Verdict: Who Is It Best For?
The Oysta Pearl+ earns a strong 4.5 out of 5 from us. It's the best GPS personal alarm we've tested for UK families, and the only one we'd recommend without reservation for active elderly users.
If your parent still goes out regularly, or if you're worried about wandering due to dementia or confusion, the Pearl+ delivers something genuinely valuable: the ability to know where they are, and to get them help wherever they are, at the press of a button.
The trade-offs are real — the battery needs charging every few days, it's not waterproof, and the monthly cost is higher than a home alarm. But for the right user, those trade-offs are absolutely worth it.
If your parent primarily stays at home, save your money and get a home-based personal alarm instead. But if they're still out and about, the Oysta Pearl+ is the one to get.
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The UK's best GPS alarm for active elderly users — with real-time tracking, geofencing, and 24/7 monitoring.
Get Oysta Pearl+ →Common Questions
Outdoors with clear sky, the Oysta Pearl+ is accurate to within 5–10 metres using GPS satellites. Indoors, it switches to Wi-Fi and cell tower positioning, which is less precise — usually within 20–50 metres. It updates every 30 seconds when tracking is active, so you get a very close to real-time picture of location.
Yes. The Oysta app (iOS and Android) shows real-time location on a map. You can check their current position at any time, view location history for the past 7 days, and receive alerts when they enter or leave geofenced areas. Multiple family members can share access to the same account.
The Pearl+ needs mobile signal to transmit its GPS position. In remote rural areas with limited coverage, the GPS chip will still calculate a position, but it may not be able to send it to the app or response centre until signal is restored. For very remote locations, check coverage first using Ofcom's checker at checker.ofcom.org.uk.
The app sends a low-battery alert when it drops below 20%, giving you time to charge it. If the battery does die completely, the last known location is stored in the app. The response centre also monitors battery levels and can contact you if it's critically low. We recommend establishing a daily overnight charging routine.
Yes. The app lets you create multiple geofenced zones — a common setup is one around the home, one around a day centre, and a wider zone around the local area. You'll receive an alert whenever the device enters or leaves any of these zones. You can also choose whether to be alerted on entry, exit, or both.