Comparison

Intermittent Fasting vs Fast AI

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

Head to head
About

Intermittent Fasting

This app helps you track intermittent fasting to support weight loss and improve metabolic health. It offers customizable plans, progress monitoring, and insights into your body's fasting zones. Integrates with health apps to sync water and weight data.

Highlights
  • Fasting timer and goal tracking
  • Customizable fasting plans
  • Health app integration (water, weight)
  • Progress monitoring and personalized insights
  • Fasting zones explanation
  • Mood journaling
  • Premium content
Read full description

Unlock the power of intermittent fasting to lose weight and improve your metabolic health. We are your personal fasting tracker for a healthier life. HEALTH APP INTEGRATION: Fasting tracker read and able to write the the following data from the Health App: - Water - Weight Intermittent fasting brings you a new lifestyle with healthy habits. But if you: Are under 18 years old. Are pregnant or breastfeeding. Have health issues, such as diabetes and cardiovascular diseases. Are underweight. Don’t feel well as a result of fasting. Consider the risks involved and ask your doctor for advice before fasting. Use of the Fasting Tracker is at your own risk. This is not a medical application, it only makes intermittent fasting more convenient for you. We also want to provide you with a list of materials on the basis of which we made our application. You can familiarize yourself with scientific works in order to better understand the mechanism of work and medical indicators of intermittent fasting for your body: “The popular fasting diet regimen can work well for weight loss, but many other claims about its benefits remain to be proved” - Scientific American https://www.scientificamerican.com/article/how-good-a-diet-is-intermittent-fasting/ “Intermittent fasting can help weight loss” - Harvard Medical School https://www.health.harvard.edu/blog/intermittent-fasting-surprising-update-2018062914156 “Intermittent fasting: What is it and how does it work? ” - Johns Hopkins Medicine https://www.hopkinsmedicine.org/health/wellness-and-prevention/intermittent-fasting-what-is-it-and-how-does-it-work With various fasting plans, fasting tracker is suitable for beginner and experienced, men and women. It guides you through your plan. No need to change your diet, you can easily stick to it. If you are under 18 years old, pregnant or breastfeeding, have health issues or are underweight, please ask your doctor for advice before fasting. FAST TRACK YOUR GOALS TIMER - Set goals, track your fasts, and stay on track. CUSTOM PLANS - Personalized protocols and adaptive recommendations help everyone from first-time fasters to advanced practitioners. MONITOR PROGRESS PERSONALIZED INSIGHTS - See how your fasting practice correlates with health markers like weight, sleep, and blood glucose. Spot trends and adjust behaviors to stay on target. FASTING ZONES - Understand what's happening in your body to stay motivated to reach your goals. JOURNAL - Reflect on how you feel during your fasts. We'll graph your moods so you can track trends over time. GET GUIDANCE FROM EXPERTS PREMIUM CONTENT - Cut through the noise with an exclusive content. STAY ACCOUNTABLE AND GET SUPPORT APPROACHABLE FASTING PLANS FOR EVERY BODY • 16-HOUR FAST, or the 16:8 Intermittent Fast, used by celebrities, athletes, and millions of Zero users to manage weight. • 18-HOUR FAST, or 18:6 for more advanced fasters. • Other popular fasts include OMAD (one meal a day), 20:4 fast and custom prolonged fasts up to 7 days Payment for Catabolic Fasting App will be charged to your iTunes Account when you subscribe. Subscriptions automatically renew unless auto-renew is turned off at least 24-hours before the end of the current period. Manage your subscription by going to your Account Settings. Read more terms & conditions: Terms of use: https://easyfastingtracker.app/policy/pp.html Privacy policy: https://easyfastingtracker.app/policy/pp.html

About

Fast AI

This app helps users achieve weight loss and improve well-being through intermittent fasting. It provides tracking, scheduling, and detailed analytics to guide users through various fasting plans. The app aims to make fasting a natural and effective part of a healthy lifestyle.

Highlights
  • Intermittent fasting tracker
  • Weight monitoring
  • Fasting and food window notifications
  • Detailed analytics
  • Multiple fasting schemes (e.g., 16/8)
  • Fasting schedule
  • Apple Health weight sync
Features
Read full description

FastMe - YOUR PROFESSIONAL FASTING ASSISTANT WHY CHOOSE FASTING? The most natural way to lose weight and keep fit. Improve your body and brain function. Burn your body fat reserves. Boost your growth hormone. Lose weight without diet and exercise. Make you feel more active. No need to count calories intake. FEATURES OF FASTING TRACKER - Intermittent fasting tracker - Weight monitoring - Notifications about start/end of fasting and food window - Detailed analytics - Most popular 16/8 scheme and more - Fasting schedule - Weight sync with Apple Health IS IT EFFECTIVE? It’s proven that this healthy lifestyle leads to fast weight loss. During fasting, as your glycogen depletes, your body switches to ketosis, which is referred to as the body's "fat-burning" mode. This is an effective way to burn fat. IS IT SAFE? Yes. It’s the most natural and safe way to lose weight. Studies show that eating all the time makes your body unable to take a break from digesting. When you fast, you just take a break from eating, it takes some of the load off your liver. CAN I USE FASTING TRACKER? With various fasting plans, fasting tracker is suitable for beginner and experienced, men and women. It guides you through your plan. No need to change your diet, you can easily stick to it. Disclaimer The contents of this app are intended for informational purposes only and not for the purpose of rendering medical advice. If you have any health issues, please consult your doctor before fasting and making any medical decisions. START A FREE TRIAL to familiarize yourself with all the app’s features. UNLIMITED ACCESS MEMBERSHIP SUBSCRIPTION Subscription can be canceled anytime. Payment will be charged to your iTunes Account at confirmation of purchase. Your subscription automatically renews unless auto-renewal is turned off at least 24 hours before the end of the current subscription. Your account will be charged for a renewed subscription within 24 hours prior to the end of current subscription. You can manage your subscription and switch off the auto-renewal by accessing your account settings after purchase. You cannot cancel the current subscription during the active subscription period. Any unused part or time-span of a free trial period will be forfeited, as soon as you purchase a subscription. All personal data is protected in accordance with the Terms of Use and Privacy Policy: Terms Of Use - https://docs.google.com/document/d/1m7ZBk0KB3KTmMfxwOvNmLuwMqQFwb-pPfbx66ZwiRtY Privacy Policy - https://docs.google.com/document/d/1pRTTuB8JbbtRMf63WT39JTws1sGbNceciEgRFeGIjXI

Screenshots

Intermittent Fasting4 screens
Fast AI4 screens

Verdict

The call

Intermittent Fasting and Fast AI both sit at 4.5 stars, but that hides the real split: 60% of Intermittent Fasting's written reviews are positive against 7% of Fast AI's. Fast AI's advantage is ads (none vs shown). On price, rating, ratings volume and update cadence 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. Intermittent Fasting sells 8 in-app purchases, starting at $4.99 per 7 days and Fast AI sells 5 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for Intermittent Fasting against 4.3 for Fast AI. Both are backed by a comparable volume of ratings — 102 and 120 respectively. Written reviews are what separate them: 60% of Intermittent Fasting's written reviews are positive against 7% of Fast AI's.

UpkeepUpdate frequency

Intermittent Fasting ships an update every 3 weeks, Fast AI every 2 weeks. Both last shipped on November 3, 2026.

Scorecard2 real differences · 8 level
Intermittent Fasting versus Fast AI: the parameters behind the verdict, then further details
ParameterIntermittent FastingFast AI
PriceFreeFree
Rating4.5 (102 ratings) — better4.3 (120 ratings)
Positive reviews60.0% of reviews — better7.1% of reviews
Number of ratings102120 — better
Update frequencyEvery 3 weeksEvery 2 weeks — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS14.014.0
Further details — not scored
Size50 MB101 MB
Age rating4+4+
DeveloperREIFOT TEKHNIKS, TOVKiryl Salavei

Customer experience

Intermittent Fasting

All ratings104 ratings
Positive84.6%
Neutral4.8%
Negative10.6%
Written reviews15 reviews
Positive60.0%
Neutral0.0%
Negative40.0%

Fast AI

All ratings120 ratings
Positive82.5%
Neutral3.3%
Negative14.2%
Written reviews14 reviews
Positive7.1%
Neutral0.0%
Negative92.9%

In-app purchases

8 purchases

Intermittent Fasting

Subscriptions8
  • Premium Week$4.997 Days
  • My Intermittent Fasting app3 Days trial$6.997 Days
  • Premium Month$14.991 Month
Show 5 more
  • Premium Month with trial3 Days trial$16.991 Month
  • Premium 3 Months$29.993 Months
  • My Intermittent Fasting 3month3 Days trial$39.993 Months
  • Premium Year$59.991 Year
  • Intermittent Fasting app year3 Days trial$74.991 Year
5 purchases

Fast AI

Subscriptions5
  • Simple intermittent fasting3 Days trial$5.997 Days
  • Intermittent Fasting 1 Month$12.991 Month
  • Personal Fast Program 3 Month$19.993 Months
Show 2 more
  • Intermittent Fasting + Tracker$35.991 Year
  • Intermittent Fasting Annual$49.991 Year

Questions

Is Intermittent Fasting free?
Intermittent Fasting is free to download, with in-app purchases available.
Is Fast AI free?
Fast AI is free to download, with in-app purchases available.
Which has better reviews, Intermittent Fasting or Fast AI?
Intermittent Fasting is rated higher. Intermittent Fasting averages 4.5 out of 5 from 102 ratings, while Fast AI averages 4.3 from 120 ratings.
Do Intermittent Fasting or Fast AI have ads?
Intermittent Fasting shows ads; Fast AI does not.
Which is updated more often, Intermittent Fasting or Fast AI?
Intermittent Fasting ships an update every 3 weeks, and Fast AI every 2 weeks. Most recently, Intermittent Fasting was updated on November 3, 2026 and Fast AI on November 3, 2026.

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