Peak Flow Diary (Asthma)

Keyber Inc. · Medical

4.7 36 ratings Free

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Chart standing · US

Not currently charting in this storefront.

What changed · US

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Oct 14, 2026
Rating ★ 4.71 → 4.72
Sep 9, 2026
Promotional text Removed
Sep 9, 2026
New version 6.0.2 → 6.1.0

- Updated the libraries used by the app - Fixed minor bugs

Aug 26, 2026
New version 5.5.1 → 6.0.2

Ratings breakdown · US

The star breakdown behind this app's rating in this storefront.

5★ 81% 29
4★ 17% 6
3★ 0% 0
2★ 0% 0
1★ 3% 1

In-app purchases · US

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Subscriptions
Monthly Plan $3.99/ month · 14-day free trial
Annual Plan $24.99/ year · 14-day free trial

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About

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

What's new · 6.1.0

- Updated the libraries used by the app - Fixed minor bugs

Details

DeveloperKeyber Inc.
ReleasedJun 2024
UpdatedJun 2026
Version6.1.0
Size61 MB
RequiresiOS 15.0 or later
Age rating4+
LanguagesEnglish, Japanese
PriceFree
Categories MedicalHealth & Fitness
Bundle IDjp.susatthi.asthma-diary