# Your Peak Flow vs Peak Flow Diary | Asthma

The clearest difference is review sentiment: Peak Flow Diary | Asthma at 74% against Your Peak Flow's 29%. Peak Flow Diary | Asthma also leads on price (Free vs $2.99) and rating (4.7 vs 2.0). Your Peak Flow's advantage is in-app purchases (none vs 2) and ads (none vs shown). On update cadence, device support and iOS requirement there is nothing between them.

Peak Flow Diary | Asthma is free to download; Your Peak Flow costs $2.99 up front. Peak Flow Diary | Asthma sells 2 in-app purchases, starting at $3.99 per month. Your Peak Flow asks for nothing beyond the download.

Peak Flow Diary | Asthma holds the better App Store score, 4.7 against 2.0. That said, the two scores are not equally well evidenced: Peak Flow Diary | Asthma has 36 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 29% of Your Peak Flow's written reviews are positive against 74% of Peak Flow Diary | Asthma's.

Your Peak Flow ships an update every 6 weeks, Peak Flow Diary | Asthma every 3 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Your Peak Flow | Peak Flow Diary | Asthma |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/your-peak-flow/id1544967818/reviews) | **[4.7 (36 ratings)](https://appshunter.io/ios/app/peak-flow-diary-asthma/id6463603745/reviews)** |
| Number of ratings | 1 | **36** |
| Positive reviews | 28.6% of reviews | **74.2% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 41 MB | 61 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Suited Technologies GmbH](https://appshunter.io/developer/1564707135) | [Keyber Inc.](https://appshunter.io/developer/1571255559) |

## What reviewers say

### Your Peak Flow

[App page](https://appshunter.io/ios/app/your-peak-flow/id1544967818)

This app serves as a digital asthma diary, securely storing your lung function values locally on your device. Easily export your data as an Excel file to share with your doctor. Set up to three daily reminders to ensure consistent tracking of your peak flow.

**Highlights:** Digital asthma diary, Local data storage, Excel data export, Doctor sharing option, Daily tracking reminders

**Features:** Apple Watch app, Vision Pro support

**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 Your Peak Flow free?

Your Peak Flow costs $2.99, 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, Your Peak Flow or Peak Flow Diary | Asthma?

Peak Flow Diary | Asthma is rated higher. Your Peak Flow averages 2.0 out of 5 from 1 ratings, while Peak Flow Diary | Asthma averages 4.7 from 36 ratings.

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

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

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

Your Peak Flow ships an update every 6 weeks, and Peak Flow Diary | Asthma every 3 weeks. Most recently, Your Peak Flow was updated on November 3, 2026 and Peak Flow Diary | Asthma on November 4, 2026.

---

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