# Headache Diary Pro vs CatAche Diary

The clearest difference is price: CatAche Diary at Free against Headache Diary Pro's $3.99. CatAche Diary also leads on update cadence (every 4 days vs every 3 months) and iOS requirement (13.0 vs 15.6). Headache Diary Pro's advantage is in-app purchases (none vs 1). On ads and device support there is nothing between them.

CatAche Diary is free to download; Headache Diary Pro costs $3.99 up front. CatAche Diary sells 1 one-off in-app purchase. Headache Diary Pro asks for nothing beyond the download.

Headache Diary Pro ships an update every 3 months, CatAche Diary every 4 days. The most recent releases landed on October 18, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Headache Diary Pro | CatAche Diary |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.5 (19 ratings)](https://appshunter.io/ios/app/headache-diary-pro/id402258244/reviews)** | — |
| Number of ratings | **19** | — |
| Positive reviews | 75.9% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 days** |
| Monetization | Paid | — |
| Size | 9 MB | 27 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Tim Preuss](https://appshunter.io/developer/1023232972) | [Stefanus van de Wetering](https://appshunter.io/developer/1883002799) |

## What reviewers say

### Headache Diary Pro

[App page](https://appshunter.io/ios/app/headache-diary-pro/id402258244)

Track your headache pain, symptoms, and potential triggers with this comprehensive mobile diary. Analyze your headache patterns with detailed statistics and export your findings for further review. Helps you gain control over your pain by understanding its characteristics.

**Highlights:** Extensive headache logging, Track pain, symptoms, and triggers, Record medication and effectiveness, Multi-user support, Comprehensive offline statistics, PDF export function

**In-app purchases:** none


### CatAche Diary

[App page](https://appshunter.io/ios/app/catache-diary-headache-log/id6760231940)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Upgrade | $1.99 | one-time |


## Frequently asked questions

### Is Headache Diary Pro free?

Headache Diary Pro costs $3.99, with no in-app purchases.

### Is CatAche Diary free?

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

### Do Headache Diary Pro or CatAche Diary have ads?

Neither Headache Diary Pro nor CatAche Diary shows ads.

### Which is updated more often, Headache Diary Pro or CatAche Diary?

Headache Diary Pro ships an update every 3 months, and CatAche Diary every 4 days. Most recently, Headache Diary Pro was updated on October 18, 2026 and CatAche Diary on October 6, 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.*