The OMRON 7 SERIES WIRELESS monitor can be used with at least two users for blood pressure readings and detecting irregular heartbeats. It will store up to 120 blood pressure readings (60 per user), but when used with the free OMRON Connect app, it supports unlimited users and stores unlimited blood pressure readings. Conveniently view your trend graphs and charts, and share as needed with your family, caregivers or doctors. The OMRON free Connect app works with iOS and Android devices, as well as Amazon Alexa enabled devices using the OMRON Health Skill.