# Poop Tracker vs Headache Detective

The clearest difference is ads: Headache Detective at none against Poop Tracker's shown. Headache Detective also leads on update cadence (weekly vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Poop Tracker sells 2 in-app purchases, starting at $2.99 per 7 days and Headache Detective sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Poop Tracker ships an update every 2 months, Headache Detective weekly. The most recent releases landed on October 18, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Poop Tracker | Headache Detective |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Weekly** |
| Size | 49 MB | 15 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Tianjin Illuso Information Technology Co., Ltd.](https://appshunter.io/developer/1864792206) | [Riku Kuisma](https://appshunter.io/developer/1853885657) |

## What reviewers say

### Poop Tracker

[App page](https://appshunter.io/ios/app/poop-tracker-stool-diary/id6767535786)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (Weekly) | $2.99 | per 7 days |
| Pro (Yearly) | $29.99 | per year |


### Headache Detective

[App page](https://appshunter.io/ios/app/headache-detective-tracker/id6772620047)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $3.99 | per month |
| Yearly | $29.99 | per year |


## Frequently asked questions

### Is Poop Tracker free?

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

### Is Headache Detective free?

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

### Do Poop Tracker or Headache Detective have ads?

Poop Tracker shows ads; Headache Detective does not.

### Which is updated more often, Poop Tracker or Headache Detective?

Poop Tracker ships an update every 2 months, and Headache Detective weekly. Most recently, Poop Tracker was updated on October 18, 2026 and Headache Detective on October 24, 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.*