Comparison

PerfectFast vs Water Fasting

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

Head to head
About

PerfectFast

This app helps you track intermittent and extended fasting periods with a clean, focused interface. It supports various fasting schedules, custom durations, and provides detailed history and statistics to monitor your progress.

Highlights
  • Intermittent and extended fast tracking
  • Custom fasting schedules
  • Fasting history and statistics
  • Reminders and notifications
  • Apple Watch companion app
  • Live Activity support
Features
Read full description

PerfectFast helps you track intermittent and extended fasts with a calm, focused experience. Set up a fasting plan, follow your active fast, review your history, and see progress statistics without clutter. The app supports common fasting schedules, custom durations, reminders, fasting stages, history views, statistics, appearance settings, local data export, and Live Activity support on compatible devices. Log water, weight, blood glucose, and ketones beside your fasts, and read them on the fast's own clock in the Fast Timeline, with resting heart rate, heart rate variability, body composition, and sleep from Apple Health if you connect it. The Apple Watch companion lets you check your current or scheduled fast from your wrist, start or end a fast when your iPhone is nearby, and keep progress on your watch face with complications. Your fasting data stays on your device unless you choose to export or share it.

About

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.

Highlights
  • Living water orb timer with gyroscope physics
  • Six science-backed fasting stages
  • Hydration and wellness logging
  • Personalized wellness insights
  • Premium minimalist design
  • Data export
Features
Read full description

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

PerfectFast4 screens
Water Fasting3 screens

Verdict

The call

The clearest difference is in-app purchases: PerfectFast at none against Water Fasting's 2. PerfectFast also leads on update cadence (every 10 days vs every 3 weeks). On price, rating, ratings volume and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Water Fasting sells 2 in-app purchases, starting at $9.99 per month. PerfectFast asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for PerfectFast against 5.0 for Water Fasting. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

UpkeepUpdate frequency

PerfectFast ships an update every 10 days, Water Fasting every 3 weeks. The most recent releases landed on October 3, 2026 and September 30, 2026 respectively.

Scorecard3 real differences · 7 level
PerfectFast versus Water Fasting: the parameters behind the verdict, then further details
ParameterPerfectFastWater Fasting
PriceFreeFree
Rating5.0 (2 ratings)5.0 (2 ratings)
Positive reviews100.0% of reviews—
Number of ratings22
Update frequencyEvery 10 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, Apple WatchiPhone, iPad
Requires iOS17.6 — better18.0
Further details — not scored
Size27 MB19 MB
Age rating12+12+
DeveloperIdan LupinskySUKRU DEMIR

In-app purchases

None

PerfectFast

No in-app purchases

2 purchases

Water Fasting

Subscriptions2
  • Water Fasting Pro$9.991 Month
  • Water Fasting Pro1 Year trial$59.991 Year

Questions

Is PerfectFast free?
PerfectFast is free to download, with no in-app purchases.
Is Water Fasting free?
Water Fasting is free to download, with in-app purchases available.
Which has better reviews, PerfectFast or Water Fasting?
PerfectFast and Water Fasting are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.
Do PerfectFast or Water Fasting have ads?
Neither PerfectFast nor Water Fasting shows ads.
Which is updated more often, PerfectFast or Water Fasting?
PerfectFast ships an update every 10 days, and Water Fasting every 3 weeks. Most recently, PerfectFast was updated on October 3, 2026 and Water Fasting on September 30, 2026.

Other comparisons