Comparison

Fasting Tracker vs WaterFast

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Fasting Tracker

Features
Read full description

Simple. Clean. Effective. Take control of your health with the most intuitive intermittent fasting tracker on the App Store. Whether you are a beginner starting your first 12:12 or a "Warrior" mastering OMAD, Fastly provides the tools you need to stay consistent and reach your goals. FEATURES DESIGNED FOR SUCCESS: Smart Fasting Timer: One-tap to start your fast with a beautiful, dark-mode interface. Personalized Plans: Choose from popular protocols including 12:12 (Beginner), 14:10 (Maintenance), 16:8 (Most Popular), 18:6 (Advanced), and 20:4 (Warrior Diet). Visual Progress: See your journey through detailed History and Calendar views. Track your success rate and "Broken" fasts to stay accountable. Motivational Statistics: Celebrate your milestones with streak tracking and "Keep Going!" alerts. Health Metrics: Monitor your weight, height, and BMI in one place to see the real-world impact of your habits. Privacy & Integration: Secure your data with Biometric Lock (FaceID/TouchID) and sync your fasting data seamlessly with Apple Health. WHY CHOOSE FAST TRACKER? No Clutter: Focus purely on your fasting windows without distracting ads or complex meal logging. Battery Efficient: Native Dark Mode design saves your screen and your battery. Premium Insights: Unlock advanced analytics to dive deeper into your body composition trends. SUBSCRIPTION DETAILS: Fastly offers auto-renewable subscriptions for premium features: * Subscription Name: Fastly Premium * Duration: Monthly and Yearly plans * Price: Pricing varies by region and is displayed in the app before purchase * Payment will be charged to your Apple ID account at confirmation of purchase * Subscription automatically renews unless canceled at least 24 hours before the end of the current period * You can manage and cancel subscriptions in your App Store account settings Privacy Policy: https://fasttrackcore.web.app/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

WaterFast

This app provides a synchronized intermittent fasting timer designed for seamless use across your iPhone and Apple Watch. It offers detailed insights into fasting zones and hydration tracking, with a focus on privacy and a user-friendly experience.

Highlights
  • Synchronized iPhone and Apple Watch timer
  • Fasting zone insights
  • Hydration tracking
  • Multiple fasting plans
  • Streak calendar
  • Data export
Features
Read full description

Some fasting apps charge many times more. WaterFast is a fraction of that — with a 3-day free trial on every plan. You decide. FASTING APPS HAVE A PROBLEM They're either overpriced, bloated with social feeds and AI coaching you never asked for — or they're simple but their Apple Watch app runs a separate countdown that drifts out of sync with your iPhone. Two timers for the same fast. Not optimal. WATERFAST IS DIFFERENT One timer. One source of truth. Your Watch doesn't follow your iPhone — it leads. Start, monitor and end your fast right from your wrist, even with your iPhone in your pocket. When you pick it up, everything matches. Always. To the second. TRY IT ALL FREE FOR 3 DAYS Start a 3-day free trial and unlock everything — no strings attached. Then keep it monthly, yearly, or one-time lifetime. Cancel anytime. EVERYTHING INCLUDED • Every plan: 16:8, 18:6, 20:4, OMAD, 5:2 and fully custom • Start & stop fasts from Apple Watch — it leads, iPhone follows • Live timer with progress ring and fasting zones • Streak calendar — don't break the chain, unlimited history • All Apple Watch complications (circular, corner, inline, rectangular) • Hydration tracking with one-tap logging and daily goal • Full stats: current streak, longest fast, total hours, success rate • Export your data as CSV • No account required BUILT FOR APPLE WATCH — REALLY Most fasting apps treat the Watch as an afterthought. WaterFast was designed wrist-first. The timer state lives in one shared place: start a fast on your Watch during dinner, check the zone on your iPhone the next morning — same fast, same seconds, zero drift. KNOW YOUR FASTING ZONES Track exactly what's happening in your body — from digestion through fat burning and ketosis to autophagy. Each zone explained in plain language, with science-based hour ranges. Educational reference only — not medical advice. HYDRATION, ON YOUR WRIST Log a glass of water with one tap on your Watch, with haptic confirmation, synced instantly to your iPhone and Apple Health. A PRICE THAT RESPECTS YOU WaterFast PRO: monthly, yearly, or one-time lifetime. Every plan starts with a 3-day free trial. We think a fasting timer shouldn't cost more than your streaming service. PRIVATE BY DESIGN No account. No ads. No tracking. Your fasting and hydration data never leaves your device (except to your own Apple Health, if you choose). Start your 3-day free trial and run your first fast in under a minute. --- Medical disclaimer: WaterFast provides educational information about fasting. It is not medical advice. Consult your healthcare provider before starting any fasting protocol, especially if you have a medical condition, are pregnant, or take medication. --- Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Fasting Tracker4 screens
WaterFast4 screens

Verdict

The call

Fasting Tracker and WaterFast are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Fasting Tracker sells 2 in-app purchases, starting at $4.99 per month and WaterFast sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Fasting Tracker versus WaterFast: the parameters behind the verdict, then further details
ParameterFasting TrackerWaterFast
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequency—Weekly
AdsNoNo
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhoneiPhone, Apple Watch — better
Requires iOS18.017.0 — better
Further details — not scored
Size15 MB3 MB
Age rating12++4
DeveloperLahiru ChathurangaLUIS ORLANDO LAZO GONZALEZ

In-app purchases

2 purchases

Fasting Tracker

Subscriptions2
  • Monthly Plan$4.991 Month
  • Annual Plan3 Days trial$29.991 Year
3 purchases

WaterFast

Subscriptions2
  • WaterFast PRO Monthly3 Days trial$2.991 Month
  • WaterFast PRO Yearly3 Days trial$9.991 Year
One-time1
  • WaterFast PRO Lifetime$24.99

Questions

Is Fasting Tracker free?
Fasting Tracker is free to download, with in-app purchases available.
Is WaterFast free?
WaterFast is free to download, with in-app purchases available.
Do Fasting Tracker or WaterFast have ads?
Neither Fasting Tracker nor WaterFast shows ads.

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