# Shire vs Alison

The clearest difference is in-app purchases: Shire at none against Alison's 1. Alison's advantage is device support (4 vs 2) and iOS requirement (15.0 vs 26.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Alison sells 1 in-app purchase, starting at $0.99 per month. Shire asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 30, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Shire | Alison |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/alison/id6803248485/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 3 MB | 16 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 12+ |
| Developer | [Rouslan Zenetl](https://appshunter.io/developer/1629490886) | [Paturious Grey](https://appshunter.io/developer/6803190947) |

## What reviewers say

### Shire

[App page](https://appshunter.io/ios/app/shire-headache-diary/id6753927167)

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

**In-app purchases:** none


### Alison

[App page](https://appshunter.io/ios/app/alison/id6803248485)

This app helps you track headaches by logging symptoms, meals, water, and sleep. It identifies potential patterns in your data to share with a clinician. Your journal remains private and on your device.

**Highlights:** Start and stop headache tracking, Log meals with ingredients, Track water and sleep intake, Optional Apple Watch integration, Read-only Apple Health integration, Optional weather data, Generate clinic letters

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Keep Monthly | $0.99 | per month |


## Frequently asked questions

### Is Shire free?

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

### Is Alison free?

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

### Do Shire or Alison have ads?

Neither Shire nor Alison shows ads.

### Which is updated more often, Shire or Alison?

Shire ships an update every 2 weeks, and Alison every 2 weeks. Most recently, Shire was updated on October 30, 2026 and Alison on November 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.*