Time in Target Range (TTR) helps you understand how consistently your blood pressure stays within a healthy range — defined as below 135/85 mmHg. You’ll find this metric on the Insights screen of the Hilo App. Tap the Time in Target Range card to explore your trends across:

  • The past 7 days

  • The past 30 days

  • The past 6 months

How it’s calculated

  • In the 7-day view, each day is divided into 2-hour time windows. For each window, the Hilo App calculates the average blood pressure and checks whether it falls within the target range (below 135/85 mmHg).

  • In the 30-day and 6-month views, the app calculates a daily average instead of using 2-hour windows.

Time in Target Range (TTR) is the percentage of time — whether in 2-hour blocks (7-day view) or full days (30-day and 6-month views) — during which your average blood pressure stayed within the target range.

What you’ll see in the app

  • A percentage showing how much time your blood pressure was in the target range.

  • Visual charts that display how your TTR is trending:

    • 2-hour windows in the 7-day view

    • Daily averages in the 30-day and 6-month views

  • A trend comparison to highlight changes from the previous period.

  • A breakdown of time spent in different blood pressure zones: Optimal, Normal, Elevated, or High, according to clinical standards.

Blood pressure classification

While TTR focuses on whether your average blood pressure remains below 135/85 mmHg, the app also classifies your readings using the 2023 European Society of Hypertension (ESH) guidelines:


Category
Blood Pressure Range
Optimal
SYS < 120 and DIA < 80
Normal
SYS 120–129 or DIA 80–84
Elevated
SYS 130–139 or DIA 85–89
High Blood Pressure (Hypertension)
SYS ≥ 140 or DIA ≥ 90



Why TTR matters

Unlike isolated readings, Time in Target Range offers a clearer and more meaningful view of how well your blood pressure is controlled over time.

Maintaining your blood pressure within a healthy range can significantly reduce the risk of damage to your organs.

By tracking TTR, you can:

  • Identify trends and fluctuations in your blood pressure

  • Understand how lifestyle changes or medications are affecting you together with your healthcare professional

  • Make better-informed decisions for your long-term health — together with your healthcare professional

information Please note that the Detailed Time in Target Range feature is available exclusively to members. For more information on how to join our membership, kindly refer to: How Do I Subscribe to Hilo Membership?