• NurtureWatch ($155 prepaid or $23 per month plus $70 for the watch) lets a caregiver track a loved one’s whereabouts through GPS, but it can also make two-way calls, monitor heart rate and detect falls. The watch also has a red SOS distress button in the event of an emergency. Unlike the Apple Watch, it works with both iPhone and Android smartphones. • LocateWatch ($16 per month for a minimum of 12 months) uses GPS to track loved ones, along with integrated cellular for making calls and built-in Wi-Fi to access the internet when in a wireless network. It also includes an SOS button to call a caregiver or family member in the event of trouble or if the watch wearer leaves a specified area. If users pay an extra $10 per month, the SOS button can also call a 24/7 emergency monitoring center. • LocateTracker ($13 per month for a minimum of 12 months) is a small and trackable device to keep in a pocket or purse, attached to a keychain or worn as a pendant.