What the colours and categories mean
Each reading gets a category from the guideline chosen in the settings, and a colour from green for the lowest category to red for the highest. Low blood pressure and isolated systolic hypertension are marked separately.
Next to every reading, the app shows a category name, such as Elevated, and a colour. They help you see at a glance how your readings compare with the limits of a medical guideline. They are free and always on.
A category describes one reading. It is not a diagnosis. Talk to your doctor about what your readings mean for you.
Where the categories come from
The app uses the guideline chosen in Settings, under Categories standard. The guideline decides how many categories there are, their names and their limits. To change it, see Choose the guideline for the colours and categories.
The systolic and the diastolic value are both checked. If they fall into different categories, the reading goes into the higher one. For example, with ESC (2024), 118 / 92 is shown as Hypertension because of the diastolic value.
What the colours mean
The lowest category is green and the highest is red. The categories in between go from yellow to orange:
| Guideline | From green to red |
|---|---|
| ESC (2024) | Non-elevated (green), Elevated (amber), Hypertension (red) |
| ESH (2023) | Optimal (green), Normal (yellow), High correct (amber), Stage 1 hypertension (orange), Stage 2 hypertension (dark orange), Stage 3 hypertension (red) |
| ACC/AHA (2017) | Normal (green), Elevated (yellow), Stage 1 hypertension (orange), Stage 2 hypertension (red) |
| JNC7 (2003) | Normal (green), Prehypertension (yellow), Stage 1 hypertension (orange), Stage 2 hypertension (red) |
The exact limits of each category are in the app: open Categories standard and tap Details under the guideline. For a comparison of the guidelines, see the blood pressure guidelines compared.
Where you see them
- In the History tab, each reading has a coloured bar on its left edge and the category name on its first line. The numbers are shown in the same colour. In the light theme, very light colours are shown a little darker so you can read them.
- In the details of a reading. See See the details of a reading.
- In the charts and the analysis.
- In the PDF report: each reading has its category, and a chart shows how your readings spread across the categories.
Two special marks
These two marks apply with every guideline:
- Hypotension: a systolic value of 100 or less and a diastolic value of 60 or less. In History, the reading has a red bar, a light red background and the line Low blood pressure. You can switch this mark off in Categories standard, under Additional classification.
- Hypertension isolated: a systolic value of 140 or more with a diastolic value below 90. In History, it is also shown with a red bar and a light red background.
Can I change the colours?
The colours of the categories are fixed. They cannot be changed.
In Settings, under Miscellaneous, the option Customize colors changes something else: the colours of the systolic, diastolic, pulse and weight lines and numbers, for example in the charts.
- Tap Customize colors.
- Tap the value whose colour you want to change, for example Systolic color.
- Pick a colour. The app saves it and restarts at once.
There is no button to go back to the original colours. Pure white cannot be chosen.
What to check if it does not work
- All readings changed colour. The guideline was changed in Categories standard. Choose the guideline you had before; your readings themselves have not changed.
- A reading shows Hypertension isolated although you expected a stage of hypertension. This mark comes before the guideline's categories when only the systolic value is high.
Checked with app version 7.9.0 · Last reviewed November 14, 2026