# PEM Diary vs NoiseWake

The clearest difference is price: PEM Diary at Free against NoiseWake's $0.29. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

PEM Diary is free to download; NoiseWake costs $0.29 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | PEM Diary | NoiseWake |
| --- | --- | --- |
| Price | **Free** | $0.29 |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/pem-diary-mecfs-crash-log/id6743624638/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | Free | — |
| Size | 92 MB | 3 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Add Jam](https://appshunter.io/developer/1075812699) | [阳 孙](https://appshunter.io/developer/1518808403) |

## What reviewers say

### PEM Diary

[App page](https://appshunter.io/ios/app/pem-diary-mecfs-crash-log/id6743624638)

This app helps individuals manage post-exertional malaise (PEM) by logging crashes, tracking severity, symptoms, and duration. It provides insights into patterns and creates a shareable record for personal reference or healthcare discussions.

**Highlights:** Log PEM crashes with dates, Track severity and symptoms, Add contextual notes, View trends on timeline/dashboard, 100% private local storage, Export data as CSV

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

**In-app purchases:** none


### NoiseWake

[App page](https://appshunter.io/ios/app/noisewake/id6746669728)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PEM Diary free?

PEM Diary is free to download, with no in-app purchases.

### Is NoiseWake free?

NoiseWake costs $0.29, with no in-app purchases.

### Do PEM Diary or NoiseWake have ads?

Neither PEM Diary nor NoiseWake shows ads.

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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.*