The goal of this feasibility study is to evaluate the preliminary impact of a mobile health application (app) called bpMedManage-R, designed to support hypertension medication self-management in persons with mild cognitive impairment (PwMCI) who live alone. The main questions this study aims to answer are whether the bpMedManage-R app shows preliminary impact on medication-related self-regulation (the ability to consistently take medications as prescribed) and self-efficacy (confidence in independently managing medication use). Participants will be randomized after a baseline assessment to the bpMedManage-R Immediate Group or the bpMedManage-R Delayed Group. Participants assigned to the Immediate Group will complete a 4-week baseline adherence period, at the end of which they will enter the intervention phase. A remote training session will be conducted to initiate the intervention phase, during which participants will download the app, learn to use it, and set up their medication schedule and reminders within the app with support from the study team. They will then use the app for 8 weeks to self-manage their medications, take part in brief weekly check-ins to review progress, and complete Outcome Assessment 1 at the end of the 8-week intervention phase. Participants assigned to the Delayed Group will complete a 12-week baseline adherence period, at the end of which they will complete Outcome Assessment 1. Subsequently, they will enter the intervention phase and will follow a process similar to that of the Immediate Group. At the end of the 8-week intervention phase, they will complete Outcome Assessment 2. Researchers will compare participants who receive the bpMedManage-R app intervention immediately to those assigned to the delayed control group.