# PeakflowLogger vs PeakFlow

The clearest difference is price: PeakFlow at Free against PeakflowLogger's $0.99. PeakFlow also leads on ads (none vs shown) and iOS requirement (16.6 vs 18.2). On review sentiment, update cadence, in-app purchases and monetization model there is nothing between them.

PeakFlow is free to download; PeakflowLogger costs $0.99 up front. PeakflowLogger sells 1 one-off in-app purchase and PeakFlow sells 5 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

PeakflowLogger ships an update weekly, PeakFlow every 5 days. Both last shipped on October 30, 2026.

## The numbers

| Metric | PeakflowLogger | PeakFlow |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (14 ratings)](https://appshunter.io/ios/app/peakflow-health-optimization/id6756493991/reviews)** |
| Number of ratings | — | **14** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 3 MB | 23 MB |
| Requires iOS | 18.2 | **16.6** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 17+ |
| Developer | [OT Consulting UG](https://appshunter.io/developer/1784934985) | [Alfred Caillard--Laniepce](https://appshunter.io/developer/1860915283) |

## What reviewers say

### PeakflowLogger

[App page](https://appshunter.io/ios/app/peakflowlogger/id6741367258)

Easily log and monitor your peak flow measurements to manage asthma and respiratory health. Visualize trends with color-coded zones and receive daily reminders. Securely sync data with healthcare providers.

**Highlights:** Peak flow measurement logging, Trend analysis charts, Color-coded health zones, Multiple user profiles, Daily measurement reminders, iCloud sync and data sharing

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### PeakFlow

[App page](https://appshunter.io/ios/app/peakflow-health-optimization/id6756493991)

This app helps you build effective habits by providing personalized, science-backed recommendations based on your lifestyle and goals. It uses data to show you which habits improve your sleep, energy, focus, and performance, offering clarity without hype.

**Highlights:** Personalized habit recommendations, Science-backed protocols, Daily wellness check-ins, Habit impact analytics, Streak tracking, Community challenges

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly 9.99 | $9.99 | per month |
| Monthly | $12.99 | per month |
| Yearly | $29.99 | per year |
| Yearly | $39.99 | per year |
| Yearly 49.99 | $49.99 | per year |


## Frequently asked questions

### Is PeakflowLogger free?

PeakflowLogger costs $0.99, and also offers in-app purchases.

### Is PeakFlow free?

PeakFlow is free to download, with in-app purchases available.

### Do PeakflowLogger or PeakFlow have ads?

PeakflowLogger shows ads; PeakFlow does not.

### Which is updated more often, PeakflowLogger or PeakFlow?

PeakflowLogger ships an update weekly, and PeakFlow every 5 days. Most recently, PeakflowLogger was updated on October 30, 2026 and PeakFlow on October 30, 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.*