# LightYet: Body Fat Tracker — Weight Loss & Food Diary

> Weight Loss & Food Diary (iPhone/iPad app by 依欢 孙.)

- Source: https://appshunter.io/ios/app/lightyet-body-fat-tracker/id6763201166 (this page in markdown: same URL + `.md`)
- Developer: [依欢 孙](https://appshunter.io/developer/1895143905)
- Category: Health & Fitness, Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 16 MB
- Languages: American English, French (France), German (Germany), Japanese, Korean, Chinese (Simplified, China), European Spanish
- Released: 2026-04-24
- Data updated: 2026-08-07
- User reviews in markdown: https://appshunter.io/ios/app/lightyet-body-fat-tracker/id6763201166/reviews.md

## What is LightYet?

TRACK WEIGHT. FOLLOW BODY FAT. LOG FOOD FASTER.

LightYet helps you keep weight, body fat, meals, calorie estimates, and progress photos in one private diary. Take a food photo or describe what you ate, review the AI-estimated calories, and save an editable meal record in seconds.

No account is required. No ads or third-party analytics.

WEIGHT & BODY-FAT TRACKER

- Log weight in kg or lb
- Record body-fat percentage and personal notes
- Follow 7-day, 30-day, and 90-day trends
- Use moving averages to understand real progress
- Estimate progress toward your target weight
- Import weight, body fat, and height from Apple Health
- Write new LightYet records to Apple Health when enabled

AI FOOD & CALORIE ESTIMATES

- Estimate meal calories from a food photo
- Describe what you ate to create an editable food record
- Review recognized foods and portions before saving
- Add or edit meals manually whenever you prefer
- See daily intake totals and recent meal history

AI WELLNESS Q&A

Ask practical questions about food, calories, training, recovery, weight, or body-fat trends. LightYet uses the context you choose to share to provide a focused answer and useful follow-up questions.

AI BODY TREND REVIEW

Bring recent meal records together with your 7-day and 30-day weight trends. Get a clear summary and one practical next step instead of reacting to a single meal or weigh-in.

VISUAL PROGRESS DIARY

Add progress photos, browse your timeline, and compare two dates side by side. See changes that the scale may not show clearly.

MORE WAYS TO STAY CONSISTENT

- Browse weight, meal, and photo history by date
- Check BMI using international and regional standards
- Build a daily logging streak and unlock achievements
- Read a built-in nutrition science guide
- View your latest progress from Home Screen widgets

LIGHTYET PRO

Unlock expanded AI usage, unlimited progress photos, multiple profiles, iCloud sync, and four additional body-fat and dashboard widgets. Monthly, yearly, and lifetime purchase options may be available in your region.

PRIVACY WITH CLEAR CHOICES

Your core records and progress photos remain under your control. LightYet does not require an account and contains no advertising or third-party analytics SDKs.

Non-AI records are stored on your device. If you enable iCloud sync, supported data is stored in your private iCloud container.

AI features are optional. Only after you agree and request an AI feature, selected information needed for that request may be sent to LightYet's AI processing service. Depending on the feature, this may include a meal photo or description, your question, and relevant profile, weight, body-fat, or calorie summaries. Progress photos are not included in AI body trend reviews.

AI estimates can be inaccurate and should be reviewed before saving. LightYet is not a medical device and does not replace professional medical advice.

Privacy Policy:
https://sunheihei.github.io/lightyet-privacy/lightyet_privacy.html

Terms of Use:
https://sunheihei.github.io/lightyet-privacy/lightyet_terms.html

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

Download LightYet and turn everyday records into a clearer picture of your progress.

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Yearly | $19.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| LightYet-Lifetime | $39.99 | one-time |



## Version history (last 5 releases)

### 2.0.0 — 2026-07-27

Improved calorie analysis: photograph or describe a meal, and AI identifies foods and estimates calories before you save an editable entry.

Health Q&A uses your authorized weight, body-fat, and calorie summaries to provide guidance better suited to your situation.

Added light feature tips for meal photos, progress photos, and Health Q&A.

Refined the Calories and Q&A labels and navigation.

### 1.1.8 — 2026-07-06

New in this update:

- Added a new 4×4 Pro weight calendar widget
- See daily weight records and a quick monthly summary on your Home Screen
- Improved the widget gallery preview experience
- Made premium status restore more reliable after launch
- Polished the Quick Entry save animation

### 1.1.7 — 2026-07-02

Meet the new AI food and wellness tools:

Estimate meal calories from a photo
Log food by voice and edit before saving
Ask AI questions about food, training, recovery, weight, and body-fat trends
Review meal records alongside recent weight trends
Browse meal records in the calendar
We also improved AI data-sharing controls, performance, and overall reliability.

### 1.1.6 — 2026-06-25

Polished several UI details across LightYet.

- Improved the calendar layout so meal and photo indicators feel less crowded.
- Refined free widget layouts and synced their preview designs.
- Improved AI Coach visual details, including a cleaner Swift 6 badge style.
- Made small spacing and alignment adjustments for a smoother overall experience.

### 1.1.5 — 2026-06-24

- Redesigned the Home screen AI assistant entry for faster access to meal calorie estimates and AI coaching.
- You can now estimate calories from a meal photo or describe a meal with voice/text from the Home screen.
- Moved AI Coach access into the Home screen for a clearer daily workflow.
- Improved the Insights page structure and restored the Weight Trends subtitle.
- Reduced Home screen complexity for smoother scrolling and a cleaner experience.

## More apps by 依欢 孙

- [SnapTemp: Auto-Delete Camera](https://appshunter.io/ios/app/snaptemp-auto-delete-camera/id6769629985)
- [SaySpend: AI Expense Tracker](https://appshunter.io/ios/app/sayspend-ai-expense-tracker/id6772868579)
- [MoonTale: Kids Bedtime Story](https://appshunter.io/ios/app/moontale-kids-bedtime-story/id6782037501)
- [BloomStep: Walk & Grow](https://appshunter.io/ios/app/bloomstep-walk-and-grow/id6790114481)

All apps by 依欢 孙: https://appshunter.io/developer/1895143905

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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 2026-08-07.*