# Allergy Tracker vs Headache Guide

The clearest difference is in-app purchases: Allergy Tracker at none against Headache Guide's 1. Headache Guide's advantage is update cadence (every 2 months vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Headache Guide sells 1 one-off in-app purchase. Allergy Tracker asks for nothing beyond the download.

Allergy Tracker ships an update every 4 months, Headache Guide every 2 months. The most recent releases landed on November 10, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Allergy Tracker | Headache Guide |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 4 MB | 32 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, Apple Watch** |
| Age rating | 4+ | 17+ |
| Developer | [LEAN ASIA CO., LTD](https://appshunter.io/developer/1815050814) | [Arjen Broeze](https://appshunter.io/developer/1369424694) |

## What reviewers say

### Allergy Tracker

[App page](https://appshunter.io/ios/app/allergy-tracker-food-diary/id6772254809)

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

**In-app purchases:** none


### Headache Guide

[App page](https://appshunter.io/ios/app/headache-guide/id6800287193)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HoofdpijnWijzer Compleet | $8.99 | one-time |


## Frequently asked questions

### Is Allergy Tracker free?

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

### Is Headache Guide free?

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

### Do Allergy Tracker or Headache Guide have ads?

Neither Allergy Tracker nor Headache Guide shows ads.

### Which is updated more often, Allergy Tracker or Headache Guide?

Allergy Tracker ships an update every 4 months, and Headache Guide every 2 months. Most recently, Allergy Tracker was updated on November 10, 2026 and Headache Guide 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.*