# HeadacheDiary vs ClusterUck

The clearest difference is review sentiment: ClusterUck at 88% against HeadacheDiary's 42%. ClusterUck also leads on rating (4.8 vs 1.8) and ratings volume (38 vs 4). HeadacheDiary's advantage is iOS requirement (10.0 vs 16.6). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ClusterUck holds the better App Store score, 4.8 against 1.8. That said, the two scores are not equally well evidenced: ClusterUck has 38 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 42% of HeadacheDiary's written reviews are positive against 88% of ClusterUck's.

HeadacheDiary ships an update every 7 months, ClusterUck every 3 months. The most recent releases landed on October 8, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | HeadacheDiary | ClusterUck |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.8 (4 ratings)](https://appshunter.io/ios/app/headachediary-lite/id542408004/reviews) | **[4.8 (38 ratings)](https://appshunter.io/ios/app/clusteruck/id1072769448/reviews)** |
| Number of ratings | 4 | **38** |
| Positive reviews | 42.3% of reviews | **87.5% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 10 MB | 6 MB |
| Requires iOS | **10.0** | 16.6 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 12+ | 9+ |
| Developer | [Tim Preuss](https://appshunter.io/developer/1023232972) | [S.J.M. Kolff](https://appshunter.io/developer/882594477) |

## What reviewers say

### HeadacheDiary

[App page](https://appshunter.io/ios/app/headachediary-lite/id542408004)

Log your headaches, symptoms, triggers, and treatments to identify patterns and gain control over your pain. Offers detailed statistics and exportable reports for analysis. Supports multiple users and provides an intuitive interface.

**Highlights:** Log headache pain, symptoms, and triggers, Track taken medication and its effectiveness, Generate comprehensive statistics and reports, Export data in PDF format, Multi-user support, Intuitive and attractive design

**In-app purchases:** none


### ClusterUck

[App page](https://appshunter.io/ios/app/clusteruck/id1072769448)

This app provides a comprehensive tool for individuals experiencing recurring headaches to log and monitor their episodes in detail. It allows for tracking duration, pain location, triggers, symptoms, medications, and even weather data. Gain insights into your headache patterns through clear data analysis and easily share reports with healthcare providers.

**Highlights:** Detailed headache episode logging, Track duration, pain location, triggers, Record symptoms and medications, Monitor weather data for insights, Analyze headache patterns with graphs, Export reports in PDF/CSV format

**In-app purchases:** none


## Frequently asked questions

### Is HeadacheDiary free?

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

### Is ClusterUck free?

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

### Which has better reviews, HeadacheDiary or ClusterUck?

ClusterUck is rated higher. HeadacheDiary averages 1.8 out of 5 from 4 ratings, while ClusterUck averages 4.8 from 38 ratings.

### Do HeadacheDiary or ClusterUck have ads?

Neither HeadacheDiary nor ClusterUck shows ads.

### Which is updated more often, HeadacheDiary or ClusterUck?

HeadacheDiary ships an update every 7 months, and ClusterUck every 3 months. Most recently, HeadacheDiary was updated on October 8, 2026 and ClusterUck on October 2, 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.*