This randomized controlled trial will assess the efficacy and scalability of a blood pressure technology system intervention. The investigators will enroll 224 older adults with hypertension to identify those who are nonadherent for one hypertension medication. The participants will be randomized to one of two groups (112 per group) to use the blood pressure system for 6-months. Both groups receive information about high blood pressure and medications. One group will also receive strategies that can be used to take medications and manage blood pressure. Both groups will complete a mid-assessment at 3-months and a post-assessment at 6-months.

Inclusion Criteria:

• age 65 years or older
• self-manage at least one hypertension medication
• able to read and speak English
• willing to participate in the study for six months
• currently have and use an Apple iPhone
• have hypertension medication adherence ≤ 90% in the last 2 weeks of the 4-week baseline monitoring period using an AARDEX MEMS® cap

Exclusion Criteria:

• have inadequate visual acuity (worse than 20/50 corrected near vision on Snellen test)
• experience severe depression (> 11 on Geriatric Depression Scale Short Form, GDS-15)
• are at risk for cognitive impairment (< 23 on Montreal Cognitive Assessment, MoCA)
• been instructed by their healthcare provider to withhold their blood pressure medication

Data and resources generated during the performance of the project will be shared with the research community primarily via conference presentations, journal articles, and summary reports made available on laboratory and company websites. Technical manuals created during the project may be made publicly available via websites geared towards sharing resources in the research community or licensed, as appropriate, and after University review. Completely de-identified final data will be shared with existing and new collaborators of the laboratories participating in the project and with new collaborators who may initiate contact by emailing one of the PIs, using HIPAA-compliant file transfer methods once the investigators complete a data-sharing agreement. The data-sharing agreement will ensure that privacy, confidentiality standards, and data security will be maintained at the recipient site and will prohibit manipulation of data

All primary and secondary outcomes completed at 3-months and 6-months are blinded.