iSpirometry vs Peak Flow Diary | Asthma
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iSpirometry
This app works with a specific spirometer device to measure key respiratory health metrics. It provides real-time data, intuitive guidance for performing tests, and stores results with additional notes for easy interpretation and sharing.
- Bluetooth spirometer connectivity
- Real-time respiratory measurements
- Intuitive test performance animation
- Comparison to target values
- Quality control grading
- Test result storage and notes
- PDF report generation
Read full descriptionHide full description
REQUIRES THE SPIROMETER SPIROBANKSMART ™ ISpirometry™ is a revolutionary app that communicates via Bluetooth Low Energy with a spirometer (SPIROBANKSMART ™) for health respiratory management. The iSpirometry system (app + device) measures FEV1, PEF, FEV6, FVC, FEV1/FVC, FEF2575 using the same exact technology currently used in the most advanced pulmonary labs worldwide. The app makes the device start the spirometry test. FUNCTIONALITIES During the test, the measurements are transferred in real time from the device to the smartphone. An intuitive animation helps the user to perform the test at best. The app compares the best values of the parameters measured by the device with the target value set during patient configuration that makes it easy to interpret the test result. In the Results view the Quality Control Grade A, B, C, D, F) of the spirometry tests session is also shown The test results are automatically stored on the smartphone and can be displayed later. For each spirometry test session, the user can add useful information such as symptoms, with the severity grade, and notes. Each time the user adds a new patient, the previous one is deleted with all its spirometry tests. SHARING With one tap the user can create and attach a pdf to an e-mail, ready to be sent.
Peak Flow Diary | Asthma
Easily record daily peak flow values and visualize breathing changes with clear graphs. Understand your asthma trends, identify early warning signs, and support your health management. Useful for medical visits and daily care.
- Daily peak flow recording
- Easy input methods (slider/keyboard)
- Zone-based graph display
- Record list with memo management
- Cloud storage and account support
- Intuitive and simple operation
Read full descriptionHide full description
Understand Your Breathing, Every Day. Peak Flow Diary is an easy-to-use app that helps you record your daily peak flow readings and track changes in your breathing over time. With just a few seconds of recording each day, you can better understand: • Your usual breathing condition • Changes and trends in your breathing • When your condition starts to worsen Color-coded zones make it easy to see your current breathing status at a glance, helping you manage your respiratory health every day. 【Key Features】 ■ Quick and easy daily recording Record your peak flow in seconds using either the slider or keyboard input. Choose the method that works best for you. ■ Color-coded graphs View your peak flow readings in easy-to-read graphs. Color-coded zones help you quickly understand your current condition and identify trends over time. ■ History and notes Review all your previous records in one place. You can also save notes about your symptoms, activities, or daily events. ■ Medical Report (PDF) Automatically generate a PDF medical report from your recorded data. Print it or show it on your smartphone to help explain your condition during medical appointments. ■ Reminder notifications Set reminders so you never forget to record your peak flow. ■ Secure cloud backup Your records are safely stored in the cloud, making it easy to restore your data when changing devices. ■ Simple and intuitive design Designed to be easy to use every day, so you can build a lasting habit. 【Premium】 Unlock additional features to gain deeper insights into your breathing. ■ Breathing Monitor Analyzes your daily peak flow readings and sends push notifications when sudden drops or declining trends are detected. ■ Long-term analysis View your peak flow data over an entire year to identify long-term trends that may not be visible within just 28 days. ■ Comparison graphs Compare your current data with the previous year to better understand seasonal changes and long-term patterns. ■ Extended Medical Reports Generate PDF medical reports covering up to one year of recorded data. ■ Ad-free experience Enjoy the app without advertisements. Keeping a daily record is the first step toward better understanding your breathing. Start tracking your breathing today with Peak Flow Diary. Peak Flow Diary Terms of Service https://susatthi-asthma-diary-prod.web.app/terms-of-service.html?lang=en Peak Flow Diary Premium Terms of Service https://susatthi-asthma-diary-prod.web.app/terms-of-service-premium.html?lang=en
Screenshots
Verdict
The clearest difference is review sentiment: Peak Flow Diary | Asthma at 74% against iSpirometry's 0%. Peak Flow Diary | Asthma also leads on rating (4.7 vs 3.4) and update cadence (every 3 weeks vs every 2 months). iSpirometry's advantage is in-app purchases (none vs 2) and ads (none vs shown). On price and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Peak Flow Diary | Asthma sells 2 in-app purchases, starting at $3.99 per month. iSpirometry asks for nothing beyond the download.
Peak Flow Diary | Asthma holds the better App Store score, 4.7 against 3.4. That said, the two scores are not equally well evidenced: Peak Flow Diary | Asthma has 36 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 0% of iSpirometry's written reviews are positive against 74% of Peak Flow Diary | Asthma's.
iSpirometry ships an update every 2 months, Peak Flow Diary | Asthma every 3 weeks. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.
| Parameter | iSpirometry | Peak Flow Diary | Asthma |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (5 ratings) | 4.7 (36 ratings) — better |
| Positive reviews | 0.0% of reviews | 74.2% of reviews — better |
| Number of ratings | 5 | 36 — better |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 6 MB | 57 MB |
| Age rating | 4+ | 4+ |
| Developer | MIR Medical International Research | Keyber Inc. |
Customer experience
iSpirometry
Peak Flow Diary | Asthma
In-app purchases
iSpirometry
No in-app purchases
Peak Flow Diary | Asthma
- Monthly Plan14 Days trial$3.991 Month
- Annual Plan14 Days trial$24.991 Year
Questions
Is iSpirometry free?
Is Peak Flow Diary | Asthma free?
Which has better reviews, iSpirometry or Peak Flow Diary | Asthma?
Do iSpirometry or Peak Flow Diary | Asthma have ads?
Which is updated more often, iSpirometry or Peak Flow Diary | Asthma?
Other comparisons















