Enter your peak flow reading, rescue inhaler use, and trigger exposure to see your Asthma Control Score and what it means for your lungs today.
You reached for the rescue inhaler four times this week and told yourself it was just the weather. Your pulmonologist, who you see twice a year, has no way of knowing that — unless you wrote it down. The space between appointments is where asthma actually gets managed or quietly slips: your airways react to pollen counts, cold mornings, a stressful week, and a few missed controller doses, and none of that shows up at a checkup you booked months ago. This tracker turns that gap into a daily check-in. Enter your Peak Flow as a percentage of your personal best, count your Rescue Inhaler Puffs, rate your Symptom Severity from 0–10, note your Trigger Exposure, and select your Controller Med Adherence. The tool returns an Asthma Control Score and a plain-language Control Verdict.
The score is a personal tracking tool, not a clinical classification. It works best when you build a habit of logging consistently so the trend line — not any single number — becomes the informative signal. A score that holds steady at 75 through high-pollen weeks tells you your management plan is doing its job; a score that drops from 80 to 55 over five days tells you something needs attention before you get to a crisis.
Peak flow as a percentage — and why personal best matters
The Peak Flow input is expressed as a percentage of your personal best, not as an absolute liters-per-minute reading. That framing is intentional. Absolute peak flow values vary significantly by height, age, and sex — a reading of 400 L/min might be excellent for one person and worrying for another. Expressing it as a percentage of your established personal best puts everyone on the same scale. Under 80% of personal best is the threshold where most asthma action plans move to the yellow zone.
The tool charts your Peak Flow Trend over seven days. A sustained drop across multiple days — say, 90%, 85%, 80%, 78% — is a more meaningful signal than a single dip. The downward trend is often the earliest warning of deteriorating control, visible days before symptoms become severe enough to feel alarming.
Rescue inhaler puffs — the honest count that changes management
Rescue Inhaler Puffs Today is one of the most clinically meaningful inputs in asthma tracking because most action plans use it explicitly: needing rescue inhaler use more than twice per week (outside of exercise-induced asthma) is a standard indicator of inadequately controlled asthma. The Rescue Inhaler Use chart across four weeks gives you a visible answer to whether your puff rate is stable, improving, or creeping upward.
Many people with asthma normalize a level of rescue use that their provider would consider undertreated. Logging it consistently — even on weeks when it seems unremarkable — creates the documented baseline that makes a pattern legible. If you go from two puffs a week to eight over a month, that shift shows up clearly in the chart data you can bring to your next appointment.
Trigger mapping and the four-chart analytics view
The Trigger and Environmental Map tab organizes the specific triggers you encountered — cold air, exercise, allergens, smoke, strong smells, viral infections, stress — so you can build a personal trigger profile over time. The analytics view displays Trigger Frequency as a bar chart across five categories and overlays it against your symptom trend line. The juxtaposition often reveals patterns that are invisible day-to-day but obvious across a month.
Someone who logs symptom severity spikes every Monday through Wednesday might notice those days correspond with high exercise trigger exposure from weekend activity. Someone whose worst weeks cluster in November and March might confirm a pattern they suspected — seasonal allergic triggers contributing to asthma worsening — and bring that documentation to an allergist for evaluation.
Controller medication adherence and why it belongs in the log
The Controller Med Adherence input has four options: Not taking it, Missed some doses, Taking most doses, and Perfect adherence. This field is important because controller medications — inhaled corticosteroids, combination inhalers — work through consistent use, not intermittently. A week of missed doses does not show up immediately in symptoms for many people, but it does show up in peak flow trends and rescue use increases over the following two weeks.
By logging adherence alongside your peak flow and rescue use, you create a timeline that shows whether control issues precede or follow adherence gaps. That timeline is far more useful for a clinical conversation than reconstructing adherence patterns from memory. If your control score consistently drops one to two weeks after logging 'Missed some doses,' the pattern becomes self-evident and actionable.
Preparing a printable report for your provider
The Print View generates an Asthma Management Report that consolidates your Control Score, symptom metrics, peak flow reading, sleep data, and zone classification into a clean single-page format. Bringing a printed or saved report to an appointment means your provider can review a week or month of data in the time it would otherwise take you to describe a few days from memory.
The report also surfaces the advisory text the tool generated based on your inputs — including any recommendations to discuss controller therapy changes, trigger management strategies, or rescue medication overuse. Those flagged items give your provider a starting point for the conversation rather than asking you to reconstruct context you may not remember clearly. Start logging today and walk into your next appointment with a month of real data instead of a guess — no login, no paywall, free to begin.
How to use it
- Enter Peak Flow as a percentage of your personal best — your doctor or a standard chart can help you establish that baseline if you have not already.
- Log Rescue Inhaler Puffs Today as a count from 0–12 and rate Symptom Severity from 0–10.
- Select Trigger Exposure level (None through Heavy) and Controller Med Adherence from the dropdown.
- Review the Control Score, Control Verdict card, and Smart Tips that surface based on your specific input combination.
- Navigate to the Trigger and Environmental Map tab to document which specific triggers you encountered, then check the Charts tab to see your trends.
Who it's for
- Adult with moderate persistent asthma on a new inhaler — Logs peak flow percentage and rescue puff count daily for six weeks after a controller medication change, documenting whether peak flow stabilizes above 85% and rescue use drops below two puffs per week.
- Parent tracking a child's exercise-induced asthma — Logs trigger exposure as Heavy on gym days and notes rescue puff use afterward, helping identify whether pre-exercise medication use consistently prevents post-exercise dips.
- Person with seasonal allergic asthma in spring — Tracks daily through pollen season, using the Trigger Frequency chart to document that allergen exposure is the primary driver of control score drops rather than adherence or weather.
- Someone preparing for a step-up therapy discussion — Uses four weeks of Control Score data and rescue puff charts to show their pulmonologist a documented pattern of inadequate control before requesting a treatment adjustment.
Key terms
- Peak flow
- A measure of how fast you can exhale air, expressed here as a percentage of your personal best. Under 80% typically signals reduced airway function.
- Rescue inhaler
- A short-acting bronchodilator (typically albuterol/salbutamol) used to relieve acute asthma symptoms. Frequent rescue use is a marker of inadequately controlled asthma.
- Controller medication
- Inhaled corticosteroids or combination medications taken daily to reduce airway inflammation. They prevent symptoms rather than treat them acutely, so consistent daily use is essential.
- Trigger
- Any factor that causes airway narrowing in a person with asthma — allergens, cold air, exercise, respiratory infections, smoke, stress, or strong odors. Personal triggers vary widely.
Frequently asked questions
How do I find my personal best peak flow?
Your personal best is typically established during a period when your asthma is well-controlled — measure peak flow at the same time each day for two to three weeks when you are feeling good. Your doctor can also help establish this number based on predicted values for your age, height, and sex.
What does the Asthma Control Score count as a good result?
Scores above 75 generally reflect good control. Scores between 50 and 74 suggest partial control — things are manageable but one or more components could be better. Below 50 consistently warrants a conversation with your provider about adjusting your management plan.
Should I log during an acute asthma attack?
During a severe episode, focus on your action plan and getting appropriate care first. Log what you can afterward, but this tracker is for ongoing daily monitoring, not emergency management. Know your action plan and follow it during acute episodes.
Does this work for children?
The tool can be used to log data for a child, though peak flow measurement requires cooperation and technique that varies by age. Many children over age 5 can use a peak flow meter with guidance. Enter their data directly and note in the Trigger Map which environmental factors applied.
My control score is good but I still have symptoms — what does that mean?
A good composite score means most inputs are in a healthy range. Check which specific inputs are pulling the score down — a Symptom Severity of 6 while everything else is green will lower the score but may not push it into the red. Focus on the field that is lowest and whether there is something actionable behind it.