# ClusterUck vs Invisible Diary

The clearest difference is in-app purchases: ClusterUck at none against Invisible Diary's 1. ClusterUck also leads on device support and iOS requirement (16.6 vs 26.2). On price there is nothing between them.

Both are free to download. Invisible Diary sells 1 one-off in-app purchase. ClusterUck asks for nothing beyond the download.

## The numbers

| Metric | ClusterUck | Invisible Diary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (38 ratings)](https://appshunter.io/ios/app/clusteruck/id1072769448/reviews)** | — |
| Number of ratings | **38** | — |
| Positive reviews | 87.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | — |
| Update frequency | Every 3 months | — |
| Monetization | Free | — |
| Size | 6 MB | 1 MB |
| Requires iOS | **16.6** | 26.2 |
| Devices | **iPhone, Apple Watch** | — |
| Age rating | 9+ | 4+ |
| Developer | [S.J.M. Kolff](https://appshunter.io/developer/882594477) | [Marcel Hecker](https://appshunter.io/developer/1816893041) |

## What reviewers say

### 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


### Invisible Diary

[App page](https://appshunter.io/ios/app/invisible-diary-mindfulness/id6760036113)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Invisible Diary Full Version | $8.99 | one-time |


## Frequently asked questions

### Is ClusterUck free?

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

### Is Invisible Diary free?

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

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*