Peak Flow Diary | Asthma
Keyber Inc. Medical iPhoneiPadiPod touch
Peak Flow Diary | Asthma is a free Medical app for iPhone and iPad by Keyber Inc. Rated 4.7/5 from 35 ratings. Requires iOS 15.0. Updated September 8, 2026.
- Rating
- 4.7
- 35 ratings
- Price
- Free
- on the App Store
- Size
- 57 MB
- Age 4+
- Updated
- Sep 8
- 2026 · v6.1.0
Screenshots
About Peak Flow Diary | Asthma
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
Ratings & reviews
4.7
35 ratings
What’s new
Version 6.1.0 · Updated September 8, 2026
- Updated the libraries used by the app - Fixed minor bugs
App privacy
The developer, Keyber Inc., reported these privacy practices to Apple.
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Usage Data: Advertising Data
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Usage Data: Advertising Data
- Diagnostics: Crash Data, Performance Data
- Health & Fitness: Health
- Contact Info: Email Address
- Identifiers: User ID
Used for: Third-Party Advertising, Analytics, App Functionality
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Usage Data: Product Interaction
Used for: Analytics
Alternatives to Peak Flow Diary | Asthma
Looking for apps like Peak Flow Diary | Asthma? Here are 6 similar apps on the App Store. The highest rated is Asthma: Tracker & Reminders (5.0/5), and all 6 are free to download.
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Daily Breathe: Asthma Tracker
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Asthma: Tracker & Reminders
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AsthmaGo
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Asthma Tracker - Astira
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Asthma Manager
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Peak Flow Log - Asthma diary
5.0
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Peak Flow Diary | Asthma | 4.7 / 5 (35 ratings) | Free | September 8, 2026 | |
| Daily Breathe: Asthma Tracker | 4.9 / 5 (31) | Free | Apr 4, 2026 | Compare |
| Asthma: Tracker & Reminders | 5.0 / 5 (5) | Free | May 10, 2026 | Compare |
| AsthmaGo | 4.7 / 5 (12) | Free | Apr 4, 2025 | Compare |
| Asthma Tracker - Astira | 3.7 / 5 (3) | Free | Jun 2, 2026 | Compare |
| Asthma Manager | 3.3 / 5 (4) | Free | May 14, 2026 | Compare |
| Peak Flow Log - Asthma diary | 5.0 / 5 (1) | Free | Apr 29, 2026 | Compare |