# Poop Tracker vs Substrata

The clearest difference is ratings volume: Substrata at 4 against Poop Tracker's 1. Poop Tracker's advantage is iOS requirement (15.1 vs 26.2). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Poop Tracker sells 2 in-app purchases, starting at $9.99 per month and Substrata sells 4 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Poop Tracker against 5.0 for Substrata. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

## The numbers

| Metric | Poop Tracker | Substrata |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/poop-tracker-plopper/id6757419242/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/substrata-headache-tracker/id6759664433/reviews) |
| Number of ratings | 1 | **4** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Every 4 days |
| Monetization | Freemium | Freemium |
| Size | 63 MB | 7 MB |
| Requires iOS | **15.1** | 26.2 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | +12 | 4+ |
| Developer | [Muhammad Mukama](https://appshunter.io/developer/1803560720) | [Steven Knauss](https://appshunter.io/developer/1877190883) |

## What reviewers say

### Poop Tracker

[App page](https://appshunter.io/ios/app/poop-tracker-plopper/id6757419242)

Log bowel movements, track digestive symptoms, and gain insights into your gut health. Understand patterns, identify triggers, and improve your digestive wellness with personalized reports and analysis.

**Highlights:** Quick & Easy Logging, Symptom Tracking, Food Logging, Personalized Insights, Advanced Gut Patterns, Data Export

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $9.99 | per month |
| Yearly Pro | $29.99 | per year |


### Substrata

[App page](https://appshunter.io/ios/app/substrata-headache-tracker/id6759664433)

This app analyzes environmental factors like weather and noise alongside your personal health data, such as sleep and heart rate, to identify potential triggers for headaches and other symptoms. It uses on-device intelligence to provide plain-English explanations and predictive alerts, helping you understand what affects your well-being.

**Highlights:** Sleep condition scoring, Headache and symptom logging, Personal trigger profile building, Predictive alert system, On-device AI correlation, HealthKit and Apple Watch integration, PDF and CSV export

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Substrata Premium Monthly | $4.99 | per month |
| Substrata Premium Annual | $29.99 | per year |
| Substrata Premium | $3.99 | one-time |
| Substrata Premium Lifetime | $89.99 | one-time |


## Frequently asked questions

### Is Poop Tracker free?

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

### Is Substrata free?

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

### Which has better reviews, Poop Tracker or Substrata?

Poop Tracker and Substrata are both rated 5.0 out of 5 on the App Store, from 1 and 4 ratings respectively.

### Do Poop Tracker or Substrata have ads?

Neither Poop Tracker nor Substrata shows ads.

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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.*