Entry and settings are hidden. Switch to Patient view to log a reading.
A reading fell below half your personal best. Follow the emergency step in your action plan and seek medical advice.
Back up your readings.
Peak flow record
Today
Morning
not logged
Evening
not logged
Add your first reading.
Add a reading
Take the reading before your inhaler dose, so every reading measures the same thing.
Blows (three, best is recorded)
Recorded: – L/min
Numbers
Treatment response
Daily record
Date
Morning
Evening
Best
% best
Swing
Zone
Flags
Notes
Chart
All readings
Date
Time
Type
Blows
Best
% best
Flags
Notes
No readings yet.
How to
Taking a reading
Stand if you can, slide the marker to zero, deepest breath in, seal your lips, one short sharp blast.
Three blows, best one counts.
Take it before your inhaler dose, morning and evening. A reading after a dose measures the dose, not your baseline.
Same meter throughout, and take it to your appointment.
Judging whether treatment is working
Preventer inhalers act over weeks, not days. Set the date you started in Settings and the app compares before and after for you.
Three things move together when control improves: readings rise, the morning-to-evening swing narrows, and extra doses become rarer.
Tick Extra inhaler dose taken when you needed one beyond your regular morning and evening dose. Those readings are excluded from every average.
What the zones mean
Green is 80% or more of your personal best. Amber is 50 to 79%. Red is under 50%. Follow the emergency step in your action plan and get help.
Settings
Treatment
Marked on the chart and used to compare readings before and after. Leave blank if nothing has changed.
Backup
A record-keeping tool, not a medical device. Follow the asthma action plan you agreed with your GP or asthma nurse, and get urgent medical help if you are struggling to breathe or a reading falls below half your best.