16h Fasting & Gut Health Log
Ametiar Health & Fitness iPhoneiPadiPod touch
16h Fasting & Gut Health Log is a free Health & Fitness app for iPhone and iPad by Ametiar. Requires iOS 15.6. Updated February 17, 2026.
- Price
- Free
- on the App Store
- Size
- 65 MB
- Age 4+
- Updated
- Feb 17
- 2026 · v1.0.4
Screenshots
About 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/
What’s new
Version 1.0.4 · Updated February 17, 2026
Minor fixes
App privacy
The developer, Ametiar, reported these privacy practices to Apple.
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers: User ID, Device ID
- Usage Data: Product Interaction, Advertising Data
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Identifiers: User ID, Device ID
- Usage Data: Product Interaction, Advertising Data
- Contact Info: Email Address
Used for: Third-Party Advertising, App Functionality
Alternatives to 16h Fasting & Gut Health Log
Looking for apps like 16h Fasting & Gut Health Log? Here are 6 similar apps on the App Store.
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Yuru Fasting — Gentle 16h
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FastFlow - Fasting Tracker
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天使と悪魔のファスティング
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FastLite: Intermittent Fasting
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Intermittent Fasting Tracker?
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10年体重計
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| 16h Fasting & Gut Health Log | – | Free | February 17, 2026 | |
| Yuru Fasting — Gentle 16h | – | Free | Oct 3, 2026 | Compare |
| FastFlow - Fasting Tracker | – | Free | Apr 15, 2026 | Compare |
| 天使と悪魔のファスティング | – | Free | Oct 5, 2026 | Compare |
| FastLite: Intermittent Fasting | – | Free | Sep 17, 2026 | Compare |
| Intermittent Fasting Tracker? | – | Free | Aug 6, 2026 | Compare |
| 10年体重計 | – | Free | Jun 2, 2026 | Compare |