Peak Flow Log vs MIR SMART ONE
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Peak Flow Log
This app helps you monitor your asthma and peak flow readings. It uses a color-coded system to indicate the quality of your measurements. Additional features are available through a premium version.
- Track asthma and peak flow
- Color-coded value indicators
- Premium features available
- Feature requests welcome
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Simple app to track your asthma / peak flow. A colour indicates how good your value is. More features are avaliable with Peak Flow Log Plus. More features are planned. Feature requests are welcome!
MIR SMART ONE
This app works with a connected device to measure respiratory function, including FEV1 and PEF. It provides real-time feedback with a traffic light system and stores results for easy tracking and sharing. Personal health data is used solely for calculating target values.
- Bluetooth Peak Flow and FEV1 measurement
- Real-time data transfer and animation
- Traffic light health indicator
- Automatic test result storage
- Symptom and note logging
- PDF report generation for sharing
- Apple Health integration
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REQUIRES THE PEAK FLOWMETER SMART ONE ™ MIR SMART ONE is a revolutionary app - integrated with Apple’s app Healt- that communicates via Bluetooth Low Energy with a Peak Flowmeter (SMART ONE ™) for self-care respiratory management. The SMART ONE system (app + device) measures FEV1 and PEF using the same exact technology currently used in the most advanced pulmonary labs worldwide. The app makes the device start the PEAK FLOW and FEV1 measurement. 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 parameter measured by the device with the target value set during configuration, displaying a traffic light health indicator (green, yellow or red) that makes it easy to interpret the test result. The test results are automatically stored on the smartphone and can be displayed later. For each test the user can add useful information such as symptoms, with the severity grade, and notes. NOTE that the personal data of the user (Date of birth, Height, Weight, Gender and Population Origin) are requested by the app for the sole and exclusive purpose of the calculation of Peak flow and FEV1 target values. SHARING With one tap the user can create and attach a pdf to an e-mail, ready to be sent to anyone is monitoring his health condition. The user can also select the time interval to be exported into the pdf. INTEGRATION WITH THE APPLE'S APP HEALTH the app SMART ONE is integrated with the Apple's app "Health". The personal and the health data sharing is performed under the apple's guidelines in order to protect the user privacy The user can give or deny to SMART ONE the permission to read from "Health" and/or write to "Health" each single type of data. SMART ONE can write to "Health" the following data (Peak Expiratory Flow Rate, Forced Expiratory Volume 1sec, Height, Weight) SMART ONE can read from "Health" the following data (Date of Birth, Sex, Height, Weight, Peak Expiratory Flow Rate, Forced Expiratory Volume 1sec). After the user permissions, the data sharing happens fully automatically, without any user specific action
Screenshots
Verdict
The clearest difference is review sentiment: Peak Flow Log at 100% against MIR SMART ONE's 25%. Peak Flow Log also leads on rating (5.0 vs 2.8) and update cadence (every 2 weeks vs every 4 months). MIR SMART ONE's advantage is in-app purchases (none vs 1) and ratings volume (22 vs 1). On price, ads 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 Log sells 1 one-off in-app purchase. MIR SMART ONE asks for nothing beyond the download.
Peak Flow Log holds the better App Store score, 5.0 against 2.8. That said, the two scores are not equally well evidenced: MIR SMART ONE has 22 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Peak Flow Log's written reviews are positive against 25% of MIR SMART ONE's.
Peak Flow Log ships an update every 2 weeks, MIR SMART ONE every 4 months. The most recent releases landed on October 10, 2026 and October 20, 2026 respectively.
| Parameter | Peak Flow Log | MIR SMART ONE |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 2.8 (22 ratings) |
| Positive reviews | 100.0% of reviews — better | 25.0% of reviews |
| Number of ratings | 1 | 22 — better |
| Update frequency | Every 2 weeks — better | Every 4 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.2 | 12.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 22 MB |
| Age rating | 4+ | 17+ |
| Developer | Friedrich Ewald | MIR Medical International Research |
Customer experience
Peak Flow Log
MIR SMART ONE
In-app purchases
Peak Flow Log
- Peak Flow Log Plus$0.99
MIR SMART ONE
No in-app purchases
Questions
Is Peak Flow Log free?
Is MIR SMART ONE free?
Which has better reviews, Peak Flow Log or MIR SMART ONE?
Do Peak Flow Log or MIR SMART ONE have ads?
Which is updated more often, Peak Flow Log or MIR SMART ONE?
Other comparisons
