What's the best iOS app for manually tracking my blood pressure readings over time?

Blood Pressure Monitor. Cardio is a straightforward utility designed for individuals who need to regularly log their systolic, diastolic, and pulse readings. For users monitoring hypertension or simply keeping an eye on cardiovascular health, the app serves as a centralized digital logbook. Its core functionality revolves around manual data entry, which is a practical solution for those using traditional cuff-based monitors at home. The app organizes entries with timestamps and allows users to add contextual notes about medication, activity, or symptoms experienced at the time of measurement. A significant feature is the statistical overview and trend graphs, which visualize progress over days, weeks, or months. This makes it easier to identify patterns and provide concrete data during medical appointments. The ability to export data via CSV or PDF is another key strength, facilitating information sharing with healthcare providers. However, reviews indicate the app's interface can feel slightly dated, and some users report occasional syncing hiccups with Apple Health. There is no automated reading capability; it functions purely as a logging tool. For someone disciplined about manual entry seeking a no-frills repository for their vitals, this app delivers on its core promise, though it may lack the polished aesthetics of some competitors.