CIRCUL for iPhone

App summary and purpose

CIRCUL is a free iPhone app from Bodimetrics LLC, listed under Utilities & Tools. It pairs with the circul+ wearable to collect physiological data and produce detailed health summaries and analyses for users.

How it connects and operates

The app links to the circul+ ring via Bluetooth. Monitoring is easy to control — a single tap starts or stops data collection — and the app automatically compiles reports from the measurements it gathers.

Monitoring modes available

• Sleep monitoring for overnight tracking and analysis
• Operation monitoring for focused measurement during activities or procedures
• Daily monitoring for routine, ongoing tracking of vital signs

What the app measures

• Diastolic and systolic blood pressure readings (supported by the latest circul+ ring)
• Continuous heart rate, including resting heart rate and ring-based heart-rate data
• Heart rate variability (SDNN) metrics
• Peripheral oxygen saturation (SpO2) levels
• Nighttime sleep patterns and quality indicators
• Body temperature readings

Data handling and Apple Health integration

All collected data is written to Apple Health in real time. The app also supports daily step counting and can read step information from Apple Health; users can choose whether steps come from the circul+ ring or from Apple Health as the source.

Additional features and status indicators

• Battery level information for the circul+ device is available within the app
• The most recent circul+ model adds blood-pressure monitoring among its capabilities

Important medical disclaimer

CIRCUL provides helpful biometric insights but is not intended to replace professional medical evaluation. For diagnosis, treatment, or medical decisions, consult a licensed healthcare provider.