Inclusion Criteria:  adults aged 18 years and older speak and understand English personally own and use an Android or iOS smartphone and take at least 1 medication for a chronic illness based on their computerized medical record at the health center.  Exclusion Criteria:  already using a medication reminder app or other electronic reminder system such as phone alarms own smartphones that are not capable of downloading the app patients with severe dementia or serious mental illness, and inability to use a mobile phone or the medication reminder software either physically or cognitively.