# Gut diary vs パルボ観察研究

The clearest difference is update cadence: Gut diary at every 3 weeks against パルボ観察研究's every 2 months. Gut diary also leads on iOS requirement (10.0 vs 12.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Gut diary ships an update every 3 weeks, パルボ観察研究 every 2 months. The most recent releases landed on October 22, 2026 and December 27, 2025 respectively.

## The numbers

| Metric | Gut diary | パルボ観察研究 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (2 ratings)](https://appshunter.io/ios/app/gut-diary/id1455072067/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 16.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 53 MB | 8 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Keietsu Yasuhara](https://appshunter.io/developer/378538320) | [Accelight Inc.](https://appshunter.io/developer/430537521) |

## What reviewers say

### Gut diary

[App page](https://appshunter.io/ios/app/gut-diary/id1455072067)

Track your daily physical, psychological, and social activities to understand their impact on your gut health. Record bowel habits, diet, sleep, exercise, and even moments of happiness. Sync with health data to identify patterns and contributing factors to abdominal comfort.

**Highlights:** Bowel habit tracking, Diet logging, Sleep cycle monitoring, Exercise recording, Social activity logging, Heart rate synchronization, Abdominal pain and stool shape entry

**Features:** macOS Compatibility

**In-app purchases:** none


### パルボ観察研究

[App page](https://appshunter.io/ios/app/id1475731447)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Gut diary free?

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

### Is パルボ観察研究 free?

パルボ観察研究 is free to download, with no in-app purchases.

### Do Gut diary or パルボ観察研究 have ads?

Neither Gut diary nor パルボ観察研究 shows ads.

### Which is updated more often, Gut diary or パルボ観察研究?

Gut diary ships an update every 3 weeks, and パルボ観察研究 every 2 months. Most recently, Gut diary was updated on October 22, 2026 and パルボ観察研究 on December 27, 2025.

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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.*