# Asthma Tracker vs Peak Flow Diary | Asthma

The clearest difference is rating: Peak Flow Diary | Asthma at 4.7 against Asthma Tracker's 2.8. Peak Flow Diary | Asthma also leads on review sentiment (74% vs 32%). Asthma Tracker's advantage is in-app purchases (none vs 2) and ads (none vs shown). On price, ratings volume, update cadence and device support there is nothing between them.

Both are free to download. Peak Flow Diary | Asthma sells 2 in-app purchases, starting at $3.99 per month. Asthma Tracker asks for nothing beyond the download.

Peak Flow Diary | Asthma holds the better App Store score, 4.7 against 2.8. Both are backed by a comparable volume of ratings — 24 and 35 respectively. Written reviews point the same way: 32% of Asthma Tracker's written reviews are positive against 74% of Peak Flow Diary | Asthma's.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 19, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Asthma Tracker | Peak Flow Diary | Asthma |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.8 (24 ratings)](https://appshunter.io/ios/app/asthma-tracker/id930849539/reviews) | **[4.7 (35 ratings)](https://appshunter.io/ios/app/peak-flow-diary-asthma/id6463603745/reviews)** |
| Number of ratings | 24 | **35** |
| Positive reviews | 31.7% of reviews | **74.2% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 6 MB | 57 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Kantonsspital Baselland](https://appshunter.io/developer/1097787991) | [Keyber Inc.](https://appshunter.io/developer/1571255559) |

## What reviewers say

### Asthma Tracker

[App page](https://appshunter.io/ios/app/asthma-tracker/id930849539)

Easily track peak flow, medication, and symptoms to manage your asthma. Set reminders for daily tasks and take the Asthma Control Test™ monthly. Integrates with Health app and offers secure data sharing with your doctor.

**Highlights:** Track peak flow values, Record medication intake, Log asthma symptoms, Add contextual notes and events, Set medication and measurement reminders, Complete Asthma Control Test™, Integrate with Health app data, Secure data sharing with doctors

**In-app purchases:** none


### Peak Flow Diary | Asthma

[App page](https://appshunter.io/ios/app/peak-flow-diary-asthma/id6463603745)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $3.99 | per month |
| Annual Plan | $24.99 | per year |


## Frequently asked questions

### Is Asthma Tracker free?

Asthma Tracker is free to download, with no in-app purchases.

### Is Peak Flow Diary | Asthma free?

Peak Flow Diary | Asthma is free to download, with in-app purchases available.

### Which has better reviews, Asthma Tracker or Peak Flow Diary | Asthma?

Peak Flow Diary | Asthma is rated higher. Asthma Tracker averages 2.8 out of 5 from 24 ratings, while Peak Flow Diary | Asthma averages 4.7 from 35 ratings.

### Do Asthma Tracker or Peak Flow Diary | Asthma have ads?

Peak Flow Diary | Asthma shows ads; Asthma Tracker does not.

### Which is updated more often, Asthma Tracker or Peak Flow Diary | Asthma?

Asthma Tracker ships an update every 3 weeks, and Peak Flow Diary | Asthma every 3 weeks. Most recently, Asthma Tracker was updated on September 19, 2026 and Peak Flow Diary | Asthma on September 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*