# Shunt Diary Headache Tracker vs Douglas 3D Sizing

The clearest difference is update cadence: Shunt Diary Headache Tracker at weekly against Douglas 3D Sizing's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

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

Shunt Diary Headache Tracker ships an update weekly, Douglas 3D Sizing every 2 months. The most recent releases landed on October 7, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Shunt Diary Headache Tracker | Douglas 3D Sizing |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/shunt-diary-headache-tracker/id1558234630/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 months |
| Monetization | Free | — |
| Size | 9 MB | 126 MB |
| Requires iOS | **14.1** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Jonathan Nakhla](https://appshunter.io/developer/1554899575) | [TechMed 3D](https://appshunter.io/developer/964196047) |

## What reviewers say

### Shunt Diary Headache Tracker

[App page](https://appshunter.io/ios/app/shunt-diary-headache-tracker/id1558234630)

This app helps hydrocephalus patients track symptoms, headache severity using a visual scale, and changes in shunt settings. It serves as a personal journal for medical documentation.

**Highlights:** Symptom journaling, Headache severity visual scale, Shunt setting changes log, Hydrocephalus patient support, Medical documentation tool

**Features:** macOS Compatibility

**In-app purchases:** none


### Douglas 3D Sizing

[App page](https://appshunter.io/ios/app/douglas-3d-sizing/id1593445668)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Shunt Diary Headache Tracker free?

Shunt Diary Headache Tracker is free to download, with no in-app purchases.

### Is Douglas 3D Sizing free?

Douglas 3D Sizing is free to download, with no in-app purchases.

### Do Shunt Diary Headache Tracker or Douglas 3D Sizing have ads?

Neither Shunt Diary Headache Tracker nor Douglas 3D Sizing shows ads.

### Which is updated more often, Shunt Diary Headache Tracker or Douglas 3D Sizing?

Shunt Diary Headache Tracker ships an update weekly, and Douglas 3D Sizing every 2 months. Most recently, Shunt Diary Headache Tracker was updated on October 7, 2026 and Douglas 3D Sizing on October 10, 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.*