Fastly vs Water Fasting
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fastly
This app provides a clean and distraction-free timer for intermittent fasting. It tracks your fasting periods in real-time, offers various popular fasting plans, and automatically monitors fasting phases like fat burning and ketosis. View your history with clear statistics and receive smart reminders.
- Clean fasting timer with real-time tracking
- Multiple intermittent fasting plans
- Automatic fasting phase tracking
- Fasting history with statistics
- Smart reminders for goals
- Minimalist interface
- Dark mode support
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Fastly is a clean, private fasting timer for 16:8, 18:6, OMAD, and custom schedules—without ads, accounts, or distractions. Start a fast with one tap, adjust your start or end time when needed, and see your elapsed time, remaining time, and planned finish at a glance. Fastly keeps the experience focused while giving you the tools you need to understand your routine and track your progress. FOLLOW YOUR FAST See estimated fasting phases based on your elapsed fasting time, including digestion, fat burning, ketosis, and autophagy. Upcoming phase markers make it easy to see what comes next during your fast. TRACK YOUR PROGRESS Review your complete fasting history through clear statistics, charts, and progress insights. Set weight and body fat goals, and optionally connect Apple Health to keep your measurements organized. STAY ON TRACK EVERYWHERE Follow your fasting status from your iPhone, Apple Watch, Home Screen widgets, and complications. Smart reminders help you stay aware of fasting goals and eating windows without unnecessary interruptions. KEY FEATURES • Real-time fasting timer with elapsed and remaining time • Planned fasting end time displayed at a glance • 14:10, 16:8, 18:6, 20:4, OMAD, and custom plans • Estimated fasting phases for digestion, fat burning, ketosis, and autophagy • Upcoming fasting phase markers • Complete fasting history with statistics and charts • Weight and body fat goals with progress benchmarks • Apple Health integration for weight and body fat • Apple Watch app and complications • Home Screen widgets for quick progress checks • Smart fasting and eating-window reminders • Optional private iCloud synchronization • Dark mode and a clean, focused interface PRIVATE BY DESIGN No ads. No third-party analytics. No developer data collection. Your fasting and health information stays on your devices and, when optional synchronization is enabled, in your private iCloud account. IMPORTANT NOTE Fasting phases are estimates based on elapsed time and can vary from person to person. Fastly is intended for general wellness and fasting tracking only. It does not provide medical advice, diagnosis, or treatment. Consult a qualified healthcare professional before making medical or dietary decisions.
Water Fasting
Track your fasting journey with a visually engaging water orb timer. Understand your body's stages, log hydration, and gain personalized wellness insights. Offers science-backed information and a premium minimalist design.
- Living water orb timer with gyroscope physics
- Six science-backed fasting stages
- Hydration and wellness logging
- Personalized wellness insights
- Premium minimalist design
- Data export
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Watch a living water orb fill as you fast. Real gyroscope physics make it slosh when you tilt your phone. Track six science backed fasting stages, log hydration, and understand what your body is doing during every hour of your fast. A Living Water Orb Timer A stunning glass orb fills with water as you fast. Real time gyroscope physics make the water slosh when you tilt your phone. Rising bubbles and fluid motion make your fast feel tangible and alive. Six Science Backed Fasting Stages From Fed State to Deep Ketosis, understand what happens in your body at every phase. All content is peer reviewed and source cited. No blogs, no hype, just science. Smart Wellness Tracking Log your water intake, check in on your energy, mood, and focus. Get personalized wellness insights that connect your hydration with how you feel. The app recommends when to drink water, rest, or adjust based on your check in scores. Beautiful Premium Design Deep ocean inspired dark theme with Apple style glass UI elements. Every screen is crafted with premium minimalism, clean typography, fluid animations, and thoughtful interactions. Free Features Basic fasting timer with water orb Water logging with 250 ml quick add Fed State information 16 to 8 and 24 hour fasting routines Pro Features Seven day free trial for all Pro features, then 59.99 USD per year Monthly option available at 9.99 USD per month All six fasting stages explained Full water tracking with custom goals Wellness check in and smart insights All routines including 36 hour, 48 hour, and 72 hour fasts Adjust start and end time Pause and resume fasting Peer reviewed educational library Safe refeeding protocols Smart notifications and reminders Export your data Your Privacy Matters Your fasting data, water logs, mood scores, and journal entries stay on your device. We never transmit health data. Anonymous opt out usage analytics, limited to event names only and without health values, help us improve the app. Sign in with Apple is optional. Local first by design. Medical Disclaimer This app is for general wellness and educational purposes only. Always consult a healthcare professional before fasting. Start your mindful fasting journey today.
Screenshots
Verdict
The clearest difference is ratings volume: Fastly at 92 against Water Fasting's 2. Fastly also leads on update cadence (every 10 days vs every 3 weeks). Water Fasting's advantage is rating (5.0 vs 4.8). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Fastly sells 4 one-off in-app purchases and Water Fasting sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
Water Fasting holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Fastly has 92 ratings behind it against 2, so its average is the more settled of the two.
Fastly ships an update every 10 days, Water Fasting every 3 weeks. The most recent releases landed on October 6, 2026 and September 30, 2026 respectively.
| Parameter | Fastly | Water Fasting |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (92 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 94.1% of reviews | — |
| Number of ratings | 92 — better | 2 |
| Update frequency | Every 10 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Requires iOS | 17.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 9 MB | 19 MB |
| Age rating | 12+ | 12+ |
| Developer | Collweb LLC | SUKRU DEMIR |
In-app purchases
Fastly
- Coffee$1.99
- Lunch$4.99
- Become a Supporter$4.99
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- Dinner$9.99
Water Fasting
- Water Fasting Pro$9.991 Month
- Water Fasting Pro1 Year trial$59.991 Year









