Hypertension is a leading cause of morbidity and mortality, affecting 121.5 million adults with more than 20 years in the United States. The American College of Cardiology/American Heart Association 2017 Hypertension Guidelines recommend that patients with elevated systolic blood pressure (BP) and hypertension undergo lifestyle modification. Evidence from prior studies have demonstrated that weight loss, healthy dietary patterns and increased physical activity lower BP. In this context, we conducted a randomized controlled trial comparing the effect of 2 strategies (minimal remote nonclinical staff support versus remote dietitian support with motivational interviewing), both using online programs and mobile applications to promote healthy behavior change, on 12‐week changes in 24‐hour systolic BP and other measures of healthy lifestyle. We hypothesized that the dietitian‐led approach would result in a greater decrease in 24‐hour systolic BP compared with the minimal‐support arm.