# Calmgrid vs Alison

The clearest difference is update cadence: Calmgrid at every 3 days against Alison's weekly. Alison's advantage is device support (4 vs 2). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Calmgrid sells 5 in-app purchases, starting at $6.99 per month and Alison sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Calmgrid ships an update every 3 days, Alison weekly. Both last shipped on October 25, 2026.

## The numbers

| Metric | Calmgrid | Alison |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/alison/id6803248485/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Weekly |
| Monetization | — | Free with in-app purchases |
| Size | 56 MB | 16 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 12+ | 12+ |
| Developer | [Ugur Ozan Yildiz](https://appshunter.io/developer/1783420306) | [Paturious Grey](https://appshunter.io/developer/6803190947) |

## What reviewers say

### Calmgrid

[App page](https://appshunter.io/ios/app/calmgrid-migraine-diary/id6758041663)

**Features:** Family Sharing

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (Monthly) | $6.99 | per month |
| Premium (Monthly) | $7.99 | per month |
| Premium (Annual) | $29.99 | per year |
| Premium (Annual) | $39.99 | per year |
| Premium (Yearly) | $59.99 | per year |


### Alison

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

Track headaches, meals, water, and sleep with this personal journal. It offers observational insights into potential patterns without diagnosing or forecasting. Data remains on your device for privacy.

**Highlights:** Start and stop headache logging, 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 Calmgrid free?

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

### Is Alison free?

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

### Do Calmgrid or Alison have ads?

Neither Calmgrid nor Alison shows ads.

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

Calmgrid ships an update every 3 days, and Alison weekly. Most recently, Calmgrid was updated on October 25, 2026 and Alison on October 25, 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.*