Follow your readings on a chart

The Graph tab shows your readings as lines over time, so you can see how they change from day to day and week to week. Charts are free, with no limit on how far back they go.

Open the chart

Tap Graph, the third icon in the row at the top of the screen. The icon appears after your first reading.

Depending on your app, the chart screen looks one of two ways: a newer one with round buttons above the chart, or an older one with boxes and a slider. Both are described below.

Choose what to show

Above the chart you can switch these lines on and off:

• SYSTOLIC and DIASTOLIC: your blood pressure values.
• PULSE: your pulse.
• Weight: your weight, if you recorded it.
• Trends: trend lines, which smooth out the ups and downs so you can see the overall direction.

Tap a button to switch its line on or off. The app remembers your choice.

All lines share one scale. If you show your weight together with your blood pressure, the lines may lie far apart; switch off what you do not need. Oxygen saturation is not shown on the chart; you see it in the details of each reading and in the Data analysis tab.

The method used for the trend lines can be changed in Settings, under Data settings, in Algorithm for trend.

The newer chart

• The chart opens on the last 30 days.
• Drag the chart left or right to go back or forward in time.
• Pinch with two fingers, or use the plus and minus buttons, to zoom. You can show between half a day and 90 days at once.
• The period you see is shown at the top right of the chart.
• The systolic and diastolic points have the colour of their category. See What the colours and categories mean.
• Tap a point to see that reading: its values, category, date and time, pulse and tags.

When you turn the phone sideways, the chart fills the screen and the buttons move to the side.

The older chart

• Tick the boxes above the chart to choose the lines.
• Use the plus and minus buttons, or drag the slider, to show a shorter or longer period. Touch and hold a button to zoom faster.

Show only some readings

To chart only a period, a category, a time of day or certain tags, tap the filter icon at the top right. The filter works as in History; see Find readings in your history. Some filters need Premium. Remember to clear the filter afterwards, because it also applies to History and the export.

The chart shows what you recorded. It does not tell you whether your values are good or bad for you. Show the chart, or a PDF report, to your doctor.

What to check if it does not work

• There is no Graph icon. Save your first reading; the icon appears afterwards.
• The chart is empty or shows only a few points. A filter may be on. Open the filter and tap Clear. Also check that at least one line is switched on.
• A line is missing. Its button is switched off, or you have no values for it, for example no weight.
• In the newer chart, the filter icon is missing when the phone is sideways. Turn the phone upright.