| iPhone Emergency SOS | Built in | Press the side button five times. It calls 999, then texts your emergency contacts your location and updates.1 | Free |
| Android Emergency SOS | Built in | Press the power button five times (Android 12 or later). It calls emergency services, shares your location with contacts and can record video.2 | Free |
| Apple Watch fall and crash detection | Built in | Calls emergency services if you don't respond after a hard fall or a severe car crash, then messages your contacts with your location.3,4 | Free with the device |
| Hollie Guard | Free app | From the Hollie Gazzard Trust. An alert sends your location, audio and video to your emergency contacts.5,6 | Free |
| Hollie Guard Extra | Paid app | A 24/7 monitoring centre takes your alert and escalates genuine threats to police with a URN, a police reference number. TSB gives it free for a year to customers facing abuse.5,7 | £7.99 a monthor £79.99 a year |
| Peoplesafe | Employers | App, devices and Apple Watch, linked to its own 24/7 alarm receiving centre. Accredited to BS 8484:2022, with URN police escalation.8,9 | On quote |
| StaySafe | Employers | Lone-worker app and cloud monitoring, certified to BS 8484. Alerts are monitored by the employer or an outside centre.10 | £3.30 a user a monthG-Cloud 14 list price |