# Peak Flow Log - Asthma diary — Track your Peak Flow

> Asthma and peak flow tracking with color-coded readings. (iPhone/iPad app by Friedrich Ewald.)

- Source: https://appshunter.io/ios/app/peak-flow-log-asthma-diary/id867777007 (this page in markdown: same URL + `.md`)
- Developer: [Friedrich Ewald](https://appshunter.io/developer/867777010)
- Category: Medical, Health & Fitness
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 26.2 · 5 MB
- Languages: English
- Released: 2014-04-29
- Data updated: 2026-06-01
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/peak-flow-log-asthma-diary/id867777007/reviews.md

## What is Peak Flow Log?

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!

## Key features

- Track asthma and peak flow
- Color-coded value indicators
- Premium features available
- Feature requests welcome

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Peak Flow Log Plus | $0.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/peak-flow-log-asthma-diary/id867777007/reviews.md

### 5/5 — It really fits my needs

*2014-05-07*

Exactly the app i was looking for. Simple and clean interface. An export would be nice.

## Frequently asked questions about Peak Flow Log

### What is Peak Flow Log used for?

Peak Flow Log is used to track your asthma and peak flow readings. It provides a color-coded indication of how good your measured value is, helping you monitor your respiratory health.

### Is Peak Flow Log free to use?

Yes, Peak Flow Log is free to download and use. However, more advanced features are available through an in-app purchase called Peak Flow Log Plus.

### What devices does Peak Flow Log support?

Peak Flow Log is available for iPhone and iPad devices.

### How often is Peak Flow Log updated?

The latest version of Peak Flow Log is 2.1.1, and it was last updated on April 29, 2026. This indicates a history of updates, though the specific frequency is not detailed.

### What is the age rating for Peak Flow Log?

Peak Flow Log has an age rating of 4+, making it suitable for a wide range of users.

### Does Peak Flow Log have ads?

No, Peak Flow Log does not contain advertisements. The app is free with the option for in-app purchases for additional features.

### Where can I suggest new features for Peak Flow Log?

The developer welcomes feature requests for Peak Flow Log. You can typically submit these through the app's store listing or by contacting the developer directly.

### How accurate is Peak Flow Log?

Peak Flow Log itself is a tracking tool, and its accuracy depends on the user's ability to take correct peak flow measurements with a physical meter. The app's rating of 5.0 stars from 1 rating suggests positive user reception of its functionality.

## Version history (last 5 releases)

### 2.1.1 — 2026-04-29

* Added toggle to turn off Tip of the Day in settings

### 2.0.3 — 2026-03-18

* Added tip of the day
* Provide hint when value is not added
* Internal improvements

### 2.0.2 — 2026-03-08

* Added functionality to share records with other apps as PDF an CSV
* Ask users to rate the app periodically
* Added easter egg for power users

### 2.0.1 — 2026-03-06

* Added reminders
* Added "Sync to Health" for not synched entries

### 2.0.0 — 2026-03-03

Completely rewritten app with modern features and UI.

## More apps by Friedrich Ewald

- [Baby Bullet: Live Departures](https://appshunter.io/ios/app/baby-bullet-live-departures/id6758545304)

All apps by Friedrich Ewald: https://appshunter.io/developer/867777010

## Related topics

[asthma track](https://appshunter.io/ios/topics/asthma-track)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*