The Omron 10 Series Wireless monitor can be used with two users for blood pressure readings, and for detecting irregular heartbeats. It will store up to 200 blood pressure readings (100 per user), but when used with the free Omron Connect app, it supports and stores unlimited blood pressure readings. Conveniently view your trend graphs and charts, and share as needed with your family, caregivers or doctors. The free Omron Connect app works with iOS and Android devices, as well as Amazon Alexa enabled devices using the Omron Health Skill.