The Wearsafe app is supported for iOS 9.0 and newer on iPhone 4S and newer, or for Android 5.1 Lollipop and newer on phones with Bluetooth® low energy technology. Full compatibility notes are at our devices page. We have additional information on previously supported legacy devices. You must install the app to send alerts.
Responders will get alerts at any phone with SMS text messaging and by email. They can respond to alerts on any smartphone or computer with a modern web browser.