# Peflog vs PEF Aware

The clearest difference is price: PEF Aware at Free against Peflog's $1.99. Peflog's advantage is in-app purchases (none vs 3) and ads (none vs shown). On update cadence, device support and iOS requirement there is nothing between them.

PEF Aware is free to download; Peflog costs $1.99 up front. PEF Aware sells 3 in-app purchases, starting at $0.99 per month. Peflog asks for nothing beyond the download.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Peflog | PEF Aware |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[2.5 (2 ratings)](https://appshunter.io/ios/app/peflog-asthma-tracker/id1212024484/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 65.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | Monthly |
| Monetization | Paid | — |
| Size | 40 MB | 44 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Pasi Kivikangas](https://appshunter.io/developer/1212024483) | [Petri Paavilainen](https://appshunter.io/developer/1870585113) |

## What reviewers say

### Peflog

[App page](https://appshunter.io/ios/app/peflog-asthma-tracker/id1212024484)

Easily monitor and assess Peak Expiratory Flow (PEF) with this asthma tracker. It digitizes manual data, generates comprehensive reports, and helps understand medication impact, supporting treatment decisions and self-monitoring.

**Highlights:** Save Peak Flow readings, Edit readings and monitoring periods, Medication puff timer, Comprehensive reports and charts, Bronchodilatation tracking, Color-coded zones (green, yellow, red), Exportable PDF reports

**Features:** Vision Pro support

**In-app purchases:** none


### PEF Aware

[App page](https://appshunter.io/ios/app/pef-aware/id6762648105)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium 1 Month | $0.99 | per month |
| Premium 1 Week | $0.99 | per 7 days |
| Premium | $3.99 | one-time |


## Frequently asked questions

### Is Peflog free?

Peflog costs $1.99, with no in-app purchases.

### Is PEF Aware free?

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

### Do Peflog or PEF Aware have ads?

PEF Aware shows ads; Peflog does not.

### Which is updated more often, Peflog or PEF Aware?

Peflog ships an update monthly, and PEF Aware monthly. Most recently, Peflog was updated on October 29, 2026 and PEF Aware on October 25, 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.*