Inclusion Criteria:

• * High BP defined as at least 1 BP readings of SBP \>= 130 or DBP \>=80 during the 24 months prior to enrollment
• * Clinic visit with primary care provider within the last 24 months
• * Ability to write and speak English or Spanish
• * 70 years of age or older
• * Ability to understand and willingness to provide informed consent
• * Owns a smartphone

Exclusion Criteria:

• * Blood pressure consistently \<130/80 mmHg
• * Presence of dementia, Alzheimer's disease, or significant neurological disease
• * Major and unstable heart disease (e.g., acute heart failure (systolic or diastolic), acute on chronic heart failure (systolic or diastolic), acute coronary syndrome or cardiac arrest, liver or renal transplantation
• * Under 70 years of age
• * Inability to write or speak English or Spanish
• * Chronic kidney disease stage 5 or ESKD
• * Chemotherapy
• * Any conditions judged by the medical providers to contraindicate participation due to risk to patient safety or lack of adherence
• * Expected life expectancy under a year