Improving Blood Pressure Control Through the myBPmyLife mHealth Application

Inclusion Criteria: * Self-reported history of hypertension and no hypertensive medication changes in the last 4 weeks. * A smartphone with a compatible Apple or Android operating system installed and able to download and use the myBPmyLife app including accepting all permissions * A valid email address * Fluent in spoken and written English * Signed written informed consent. (Note that each participant must be able to consent for themselves.) Exclusion Criteria: * Contraindication to performing physical activity or following a sodium restriction diet. The participant must be able to walk and eat on their own without assistive devices. * Unstable symptoms or markedly elevated BP at enrollment (defined as systolic BP\>180 mmHg, diastolic BP\>120 millimeters of mercury (mmHg)) * Known secondary causes of hypertension (e.g., adrenal insufficiency, pheochromocytoma), heart failure, or end-stage renal disease * Difficulty using an upper arm blood pressure cuff due to biceps size or end-stage renal disease or difficulty comfortably wearing a smartwatch * Wrist too large to wear a smartwatch comfortably. * Daily sodium intake less than 1500 mg/day as measured by the sodium screener * Currently pregnant or planning to become pregnant in the next six months