# Poop Tracker vs Sub20

The clearest difference is device support: Sub20 at 4 against Poop Tracker's 1. Sub20 also leads on iOS requirement (15.0 vs 18.6). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Poop Tracker sells 4 in-app purchases, starting at $1.99 per month and Sub20 sells 1 in-app purchase, starting at $24.99 per month. Whichever you choose, the download price is not the number that matters.

Poop Tracker ships an update every 4 days, Sub20 every 3 days. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Poop Tracker | Sub20 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/poop-tracker-simplepoo/id6751907229/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | **Every 3 days** |
| Monetization | Freemium | — |
| Size | 7 MB | 10 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Bavyking Solutions SRL](https://appshunter.io/developer/1837485230) | [Chris Edgar](https://appshunter.io/developer/6775813655) |

## What reviewers say

### Poop Tracker

[App page](https://appshunter.io/ios/app/poop-tracker-simplepoo/id6751907229)

This app helps you track bowel movements to identify patterns and build healthy habits. It offers one-tap logging, Siri integration, and detailed trend analysis. Your data is kept private on your device, with optional reminders and export options.

**Highlights:** One-tap logging, Siri and Shortcuts integration, Notes for context, Weekly & monthly trend charts, Gentle reminders, Face ID privacy, CSV/PDF export

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SimplePoo Premium — Monthly | $1.99 | per month |
| SimplePoo Premium — Weekly | $3.99 | per 7 days |
| SimplePoo Premium — Yearly | $29.99 | per year |
| LifeTime Unlock | $59.99 | one-time |


### Sub20

[App page](https://appshunter.io/ios/app/sub20-5k-running-coach/id6775813653)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sub20 Monthly | $24.99 | per month |


## Frequently asked questions

### Is Poop Tracker free?

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

### Is Sub20 free?

Sub20 is free to download, with in-app purchases available.

### Do Poop Tracker or Sub20 have ads?

Neither Poop Tracker nor Sub20 shows ads.

### Which is updated more often, Poop Tracker or Sub20?

Poop Tracker ships an update every 4 days, and Sub20 every 3 days. Most recently, Poop Tracker was updated on October 16, 2026 and Sub20 on October 14, 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.*