# 16h Fasting & Gut Health Log — Gut health & fasting insights

> Gut health & fasting insights (iPhone/iPad app by Ametiar.)

- Source: https://appshunter.io/ios/app/16h-fasting-and-gut-health-log/id6757078886 (this page in markdown: same URL + `.md`)
- Developer: [Ametiar](https://appshunter.io/developer/1465452317)
- Category: Health & Fitness, Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.6 · 65 MB
- Languages: American English, Japanese
- Released: 2026-02-05
- Data updated: 2026-09-08
- User reviews in markdown: https://appshunter.io/ios/app/16h-fasting-and-gut-health-log/id6757078886/reviews.md

## What is 16h Fasting & Gut Health Log?

Achieve your ideal body and mental state through gut health and fasting.

“Gut Health Fasting” is a total healthcare app that combines fasting with gut health tracking to help you discover the optimal lifestyle for your body. Beyond supporting 16-hour fasting practices, it analyzes the correlations between your meals, hydration, physical condition, and bowel movements, visualizing “what works best for you” through data.

【Key Features】
■ “Fasting Timer” that shows your body's changes
It doesn't just count time. It notifies you of changes happening inside your body at each stage—from “Fat Burning Begins” to “Autophagy (Cell Rejuvenation)” and “Detox”—as you progress from 4 to 72 hours. This helps you maintain motivation and continue fasting without strain.

■ Gut-Focused “Gut Environment Log”
Beyond stool consistency based on the Bristol Stool Scale, it records color, volume, odor, sense of relief (incomplete evacuation), and ease of passage in detail. Catch your gut's SOS signals and objectively track daily changes.

■ “Correlation Analysis Feature” to Find Your Personal Optimal Solution
Automatically analyzes trends based on your recorded data:
・Optimal Fasting Duration: “Is 16 hours better, or 12 hours?” Calculates the fasting time that best aligns with your gut's rhythm.
・Food & Hydration Compatibility: Identifies “foods that suit your gut,” “foods that don't suit your gut,” and your optimal hydration level.
・7-Day Health Score: Ranks your health status (S to D rank) across 5 categories: fasting, hydration, diet, bowel movements, and overall condition.

■ Manage Your Health All in One Place
・Meal Logging: Easily record what you eat by selecting from categories.
・Hydration Tracking: Log water, tea, coffee, etc., with hydration reminders.
・Wellness & Lifestyle: Track headaches, skin issues, mental state, sleep, exercise, and more to identify causes of discomfort.
・Weight & Body Fat: Monitor progress with graphs to manage your diet.

【Recommended For】
・Those wanting to maximize the effects of 16-hour fasting (autophagy)
・Those troubled by unexplained discomfort like constipation, diarrhea, or skin issues
・Those wanting to know “what foods make them feel unwell”
・Those wanting to efficiently diet and improve their constitution using numbers and data

Start a new habit today: Rest your gut, get to know yourself, and regulate from within.

Terms of Use (EULA) : https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| 1 Month Premium | $5.99 | per month |
| 12 Months Premium | $34.99 | per year |
| 3 Months Premium | $9.99 | per 3 months |



## Version history (last 5 releases)

### 1.0.4 — 2026-02-17

Minor fixes

### 1.0.3 — 2026-02-16

Minor fixes

### 1.0.2 — 2026-02-09

Fixed hydration reminder

### 1.0.1 — 2026-02-07

Fixed the review feature

### 1.0 — 2026-02-06

No release notes.

## Apps similar to 16h Fasting & Gut Health Log

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Yuru Fasting — Gentle 16h](https://appshunter.io/ios/app/yuru-fasting-gentle-16h/id6767130131) | — | Free | Health & Fitness |
| [Calorie Counter: Food Scanner](https://appshunter.io/ios/app/calorie-counter-food-scanner/id6763993573) | — | Free | Health & Fitness |
| [Hydration Coach: Water Tracker](https://appshunter.io/ios/app/hydration-coach-water-tracker/id6757718430) | — | Free | Health & Fitness |
| [GutAgent - Health Assistant](https://appshunter.io/ios/app/gutagent-health-assistant/id6758578854) | — | Free | Health & Fitness |
| [Loop – Fasting Tracker](https://appshunter.io/ios/app/loop-fasting-tracker/id6757866126) | — | Free | Health & Fitness |
| [Fasting Timer - Simple Tracker](https://appshunter.io/ios/app/fasting-timer-simple-tracker/id6758533201) | — | Free | Health & Fitness |

## More apps by Ametiar

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- [Touch the Number 25](https://appshunter.io/ios/app/touch-the-number-25/id6756625355)
- [StageDiary ステージダイアリー - 観劇記録](https://appshunter.io/ios/app/stagediary/id6765831562)

All apps by Ametiar: https://appshunter.io/developer/1465452317

## Related topics

[16h fasting & gut health log](https://appshunter.io/ios/topics/16h-fasting-gut-health-log)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-08.*