# UNDRGRND Training vs BowelLog

The clearest difference is ads: UNDRGRND Training at none against BowelLog's shown. BowelLog's advantage is update cadence (every 10 days vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UNDRGRND Training ships an update every 2 months, BowelLog every 10 days. The most recent releases landed on October 18, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | UNDRGRND Training | BowelLog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/bowellog-stool-tracker/id6760383327/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 10 days** |
| Monetization | — | Ad-supported |
| Size | 56 MB | 26 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Momence, Inc.](https://appshunter.io/developer/1577856011) | [Blas Prieto](https://appshunter.io/developer/1878084920) |

## What reviewers say

### UNDRGRND Training

[App page](https://appshunter.io/ios/app/undrgrnd-training/id6450916859)

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

**In-app purchases:** none


### BowelLog

[App page](https://appshunter.io/ios/app/bowellog-stool-tracker/id6760383327)

Easily monitor your digestive health by logging stool types using the Bristol Stool Scale and tracking bathroom duration. Gain insights into your gut health with visual charts and patterns. Your data is kept private and stored locally on your device.

**Highlights:** Bristol Stool Scale logging (Types 1-7), Bathroom time tracking, Optional notes for logs, Daily and historical stats, Streak tracking, 7-day frequency chart, 28-day heatmap

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

**In-app purchases:** none


## Frequently asked questions

### Is UNDRGRND Training free?

UNDRGRND Training is free to download, with no in-app purchases.

### Is BowelLog free?

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

### Do UNDRGRND Training or BowelLog have ads?

BowelLog shows ads; UNDRGRND Training does not.

### Which is updated more often, UNDRGRND Training or BowelLog?

UNDRGRND Training ships an update every 2 months, and BowelLog every 10 days. Most recently, UNDRGRND Training was updated on October 18, 2026 and BowelLog on October 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.*