# FastWindow - Fasting Tracker — Weight Loss · Habit · BMI

> Weight Loss · Habit · BMI (iPhone/iPad app by 刚 唐.)

- Source: https://appshunter.io/ios/app/fastwindow-fasting-tracker/id6794548347 (this page in markdown: same URL + `.md`)
- Developer: [刚 唐](https://appshunter.io/developer/6776900529)
- Category: Health & Fitness
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 8 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2026-08-15
- Data updated: 2026-09-08
- User reviews in markdown: https://appshunter.io/ios/app/fastwindow-fasting-tracker/id6794548347/reviews.md

## What is FastWindow?

FastWindow turns intermittent fasting into a habit you can actually see. One giant, beautiful fasting ring shows exactly where you are in your fast — how long you've fasted, how long remains, and which metabolic stage your body has reached.

TRACK YOUR FAST, STAGE BY STAGE
• One-tap start and stop with a satisfying completion summary
• Fasting stages visualized on the ring: blood sugar drop, fat burning, ketosis, autophagy
• Preset plans: 16:8, 18:6, 20:4, OMAD, 5:2 — or build a custom window
• Forgot to log? Add past fasts anytime

STAY MOTIVATED
• Streak counter with current and best runs
• Monthly heatmap calendar that fills in as you fast
• Local reminders before your window opens or closes
• Home Screen and Lock Screen widgets show live fasting progress

MORE THAN A TIMER
• Weight log with trend chart, goal progress, and BMI gauge
• Water tracking with quick-add cups
• Snap photos of your meals during eating windows
• Apple Health sync for weight and water
• CSV import and export, PDF weekly reports

YOUR AI FASTING COACH
• Snap a meal photo and let AI estimate calories and macros
• Generate a personalized AI weekly report from your real data
• Chat with an AI coach that knows your fasting history
• On-device smart suggestions are always free

FastWindow is free to use: unlimited 16:8 fasting, weight, water and streak tracking cost nothing. Pro unlocks every plan, full stage insights, advanced charts, exports, and a monthly AI credit allowance.

SUBSCRIPTION DETAILS
FastWindow is free to download and use forever. Pro unlocks all fasting plans, full stage insights, advanced statistics, CSV/PDF export, share cards, plus monthly AI credits.

• Pro Monthly — $3.99, auto-renews monthly (includes 100 AI credits/month)
• Pro Yearly — $23.99, auto-renews yearly (includes 300 bonus AI credits)
• Pro Lifetime — $49.99 one-time purchase, no renewal

AI credit packs (100 / 500 / 2000) are also available as one-time purchases.

Payment is charged to your Apple ID at confirmation of purchase. Subscriptions auto-renew at the same price unless auto-renew is turned off at least 24 hours before the period ends. Manage or cancel anytime in Apple ID account settings.

Terms of Use: https://auto-abd80.web.app/terms.html
Privacy Policy: https://auto-abd80.web.app/privacy.html

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Pro Monthly | $3.99 | per month |
| Pro Yearly | $23.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 100 Credits | $0.99 | one-time |
| Pro Lifetime | $1.99 | one-time |
| 500 Credits | $3.99 | one-time |
| 2000 Credits | $12.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-08-15

No release notes.

## More apps by 刚 唐

- [Vacation Countdown Widget Pro](https://appshunter.io/ios/app/vacation-countdown-widget-pro/id6777309240)
- [Stickly - AI Sticker & Widget](https://appshunter.io/ios/app/stickly-ai-sticker-and-widget/id6779623762)
- [AlmanacDay](https://appshunter.io/ios/app/almanacday/id6787885912)
- [PixelCraft - Pixel Art Maker](https://appshunter.io/ios/app/pixelcraft-pixel-art-maker/id6793414923)
- [LunaCal - Moon Phase Calendar](https://appshunter.io/ios/app/lunacal-moon-phase-calendar/id6799173816)

All apps by 刚 唐: https://appshunter.io/developer/6776900529

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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.*