Fill in a reading from your monitor's display

Most blood pressure monitors show the result as large digital numbers. The app can read those numbers with your phone's camera and fill them in for you. You still check them and save the reading yourself. The scanner is free.

The scanner only reads the numbers your monitor shows. It does not measure blood pressure. Measure with your monitor first.

Before you start

• The Scan button is on the Data tab, under Manual blood pressure measurement. If you do not see it, see "What to check if it does not work" below.
• The scanner works with monitors that show the numbers in large digital segments, like a digital clock: systolic at the top, diastolic below it in the same size, and the pulse below that.
• The pictures from the camera are read on your phone. They are not saved and not sent anywhere.

Scan the display

1. Measure your blood pressure with your monitor and leave the result on its display.

2. In the app, open the Data tab and tap Scan.

3. The first time, Android asks whether the app may use the camera. Allow it.

4. Hold the phone over the monitor so that the display fits inside the frame on the screen. The app shows Fit your monitor's display inside the frame.

5. Hold the phone still. The frame turns yellow while the app reads the pulse, and green when it has read the numbers. The phone vibrates briefly.

6. A card shows Check the values from your monitor with the values the app read. Compare them with your monitor.

7. If they are right, tap Use these values. If one is wrong, tap Scan again to read the display again.

8. Back on the Data tab, the values are filled in. Check the sliders Sys., Dia. and Pul. once more.

9. Tap Add to save the reading. Nothing is saved until you do.

To leave the scanner without using any values, tap the cross at the top left. The Help icon at the top opens this page, and the Flashlight icon switches the phone's light on if the room is dark.

When the pulse is not read

The app only fills in a pulse when it is sure of it. If it cannot read the pulse clearly, the card shows a dash instead, and the Pul. slider keeps the value it had before. Set the pulse yourself before you tap Add, or the old value is saved with the reading.

What to check if it does not work

• There is no Scan button. The scanner needs a camera on the back of the phone. It is part of the larger input screen, the one with Manual blood pressure measurement at the top. If your Data tab looks different, see Add a reading: date, time and values for how to switch the input screen.
• The app shows Camera access needed. You refused the camera. Tap Open Settings, allow the camera in the phone's settings, go back to the app and tap Scan again.
• The app shows This is taking longer than usual. Move a little closer, avoid reflections, or turn on the light.. Move a little closer, tilt the phone to avoid reflections on the display, or tap Flashlight.
• The app shows Your monitor may not be supported yet. Close the scanner to enter the values by hand.. Some displays, for example ones with small or thin numbers, cannot be read yet. Close the scanner and set the values on the Data tab by hand.
• The scanner reads a wrong number. Tap Scan again, or use the values and correct them on the sliders before you tap Add. If you already saved it, see Edit or delete a reading.