Comparison

Zero vs Intermittent Fasting Tracker Х

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

Head to head
About

Zero

This app tracks intermittent fasting and nutrition to help users achieve real body composition changes. It integrates fasting, protein intake, meals, hydration, and habits for a holistic approach to weight loss and metabolic health.

Highlights
  • Intermittent fasting timers and streaks
  • Smart meal logging with photo recognition
  • Personalized daily protein target tracking
  • Integrated fasting and protein tracking
  • Water and habit tracking
  • Science-based insights on fasting and nutrition
Features
Read full description

Zero is the all-in-one fasting tracker and nutrition app built for real results. Most fasting and weight loss apps stop at simply tracking fasts or calories. Zero connects the full picture — fasting, protein, meals, hydration, and habits — so you actually change your body composition, not just your eating schedule. Here’s how Zero helps you get there: • Track your intermittent fasting — Engage timers, streaks, and insights keep you stay motivated and consistent across your entire fasting journey. • Log meals the smart way — Skip the tedious manual meal entry routine. With Zero Plus, snap a photo and get instant macros, protein composition, and clarity on how effectively your meals support your goals. Your first meal logs are on us, so you can try it before you subscribe. • Hit your Protein Score — Zero Plus tracks a personalized daily protein target that adapts to your weight and goals. Better protein = better satiety, better muscle retention, better weight loss. Zero makes it automatic. • Complete the equation: Fasting + Protein — Most people fast or track meals. Zero brings them together so you lose weight, protect muscle, and avoid the pressure and guilt of traditional calorie trackers. • Stay hydrated to power your fasts — Water tracking with Zero Plus helps you maintain energy, reduce cravings, and support metabolic function throughout the day. • Build healthy habits that actually matter — Track movement, sleep, mood, and other daily pillars that reinforce your fasting and fueling routine. • Challenge yourself — Hit protein targets, maintain fasting streaks, and stay accountable with motivating challenges built around outcomes, not vanity metrics. • Learn the real science — Understand how fasting, protein, and hydration work together for sustainable weight loss and metabolic health — with insights from leading experts. • See measurable progress — Watch your streaks grow, your protein consistency rise, and your body composition improve with clean, insightful trend views. Whether you’re starting out or optimizing an existing routine, Zero gives you the structure, guidance, and clarity most apps miss. Zero is not a medical device and does not provide medical advice, diagnosis, or treatment. Always consult your doctor or qualified healthcare provider before making any changes to your diet, fasting routine, or health regimen. Zero is free to download, with fasting timers, streaks, weekly trends, expert articles, and challenges included. Zero Plus is an optional subscription that unlocks photo meal logging and your Protein Score, water tracking, custom fasts and saved presets, Fat-Burning Mode, the mood journal and daily habit insights, premium articles and Plus-only challenges, and monthly, yearly, and correlated charts. A free trial is available. Payment for Zero Plus will be charged to your Apple 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 in your Account Settings. Read more terms & conditions: Terms of use: https://www.zerolongevity.com/terms-of-use Privacy policy: https://www.zerolongevity.com/privacy-policy

About

Intermittent Fasting Tracker Х

This app helps users lose weight and improve eating habits through intermittent fasting. It provides tools for tracking weight, water intake, and calorie estimates, along with personalized diet plans and fasting timers to build sustainable routines.

Highlights
  • Weight tracking
  • Water intake tracking
  • AI food calorie estimation
  • Body measurements
  • BMI calculation
  • Fasting timer
  • Personalized diet plans
Features
Read full description

Intermittent Fasting Tracker X is designed for people who want to lose weight, improve eating habits, and build a consistent fasting routine. If you struggle with diets, calorie control, or consistency, this app helps you use intermittent fasting as a structured and effective method for fat loss. Intermittent fasting works by creating a natural calorie deficit through controlled eating windows. By following methods like 16:8, you reduce calorie intake, support fat burning, and improve metabolic balance. Intermittent Fasting Tracker X helps you apply this method in a simple and practical way, turning fasting into a sustainable habit. The app combines fasting schedules, calorie awareness, and progress tracking in one system, helping you understand how your daily actions affect your weight and results. When you control your eating window, you reduce calories. When calories are reduced, your body uses stored fat. When progress is tracked consistently, long-term weight loss improves. Core tracking tools support your progress: • Weight tracking helps monitor changes and fat loss trends • Water tracking supports hydration and appetite control • AI food tracking helps estimate calorie intake • Body measurements show fat reduction beyond weight • BMI calculation evaluates body composition • Statistics and charts visualise progress • Hunger tracking helps adjust your routine • Fasting timer ensures accurate fasting schedules Hydration plays a key role in fasting success. Proper water intake helps regulate hunger and maintain energy. The app makes it easy to stay hydrated and balanced. Weight management becomes more effective with clear feedback. By tracking weight, body measurements, and calorie intake together, you get a complete picture of your progress and can make better decisions. The personalised diet plan helps you adapt fasting to your lifestyle. Instead of strict diets, you build a structured eating routine that supports sustainable weight loss. The AI-powered food scanner simplifies calorie tracking. By scanning meals, you get fast and accurate insights, making it easier to stay within your target. Intermittent Fasting Tracker X focuses on simplicity and usability. The app removes unnecessary complexity and provides practical tools that support real results. Whether your goal is to lose weight, reduce body fat, or improve eating habits, you get a clear system to follow every day. Intermittent fasting 16:8 is one of the most effective methods for weight loss. By limiting your eating window, you naturally reduce calorie intake and support fat burning. The app helps you follow this method consistently and track its impact. Intermittent Fasting Tracker X turns fasting into a structured system for weight loss. By combining fasting schedules, calorie awareness, and progress tracking, you can achieve sustainable fat loss and long-term results. Download Intermittent Fasting Tracker X and start building a consistent fasting routine for real weight loss. Subscription Terms and Details Get unlimited access to all features for USD $5.99 per month, USD $11.99 for 3 months, or USD $29.99 per year. Payment will be charged to your iTunes account after a three-day free trial period. You can cancel within this period. Subscription renews automatically unless turned off at least 24 hours before the end of the current period. Manage subscriptions in Account Settings. Renewal is charged within 24 hours before the period ends. Any unused free trial portion will be forfeited after purchase. Disclaimer This app provides information only and should not replace medical advice. Consult your doctor before starting fasting or making health decisions. Privacy Policy: https://www.termsfeed.com/live/f3de083b-25e4-46fb-a2e0-0e5f6801fa7d Terms of Use: https://firebasestorage.googleapis.com/v0/b/tracker-x-9d936.appspot.com/o/terms.html?alt=media&token=7e9e043f-667e-4419-b349-4273f2c338fd

Screenshots

Zero4 screens
Intermittent Fasting Tracker Х4 screens

Verdict

The call

The clearest difference is review sentiment: Intermittent Fasting Tracker Х at 89% against Zero's 33%. Intermittent Fasting Tracker Х also leads on rating (5.0 vs 4.8) and iOS requirement (15.6 vs 17.0). Zero's advantage is ratings volume (445K vs 2) and chart position (#112 vs unranked). On price, update cadence, ads and in-app purchases 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. Zero sells 10 in-app purchases, starting at $9.99 per month and Intermittent Fasting Tracker Х sells 11 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Intermittent Fasting Tracker Х holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Zero has 445K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 33% of Zero's written reviews are positive against 89% of Intermittent Fasting Tracker Х's.

UpkeepUpdate frequency

Zero ships an update every 2 weeks, Intermittent Fasting Tracker Х fortnightly. The most recent releases landed on September 25, 2026 and July 8, 2026 respectively.

Scorecard5 real differences · 6 level
Zero versus Intermittent Fasting Tracker Х: the parameters behind the verdict, then further details
ParameterZeroIntermittent Fasting Tracker Х
PriceFreeFree
Rating4.8 (445K ratings)5.0 (2 ratings) — better
Positive reviews32.6% of reviews88.9% of reviews — better
Number of ratings445K — better2
Update frequencyEvery 2 weeks — betterFortnightly
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
Best chart rank#112 — better—
DevicesiPhone, Apple WatchiPhone, iPad, iPod — better
Requires iOS17.015.6 — better
Further details — not scored
Size238 MB106 MB
Age rating17+4+
DeveloperZero Longevity Science, Inc.Aliaksei Kupreyeu

Customer experience

Zero

All ratings445,297 ratings
Positive96.3%
Neutral2.1%
Negative1.6%
Written reviews1,364 reviews
Positive32.6%
Neutral8.6%
Negative58.9%

Intermittent Fasting Tracker Х

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews9 reviews
Positive88.9%
Neutral0.0%
Negative11.1%

Bugs and requests

Zero

Reported bugs

3 issues
  • Password reset problems
  • Inaccurate fasting time tracking
  • Inability to exit trial without subscribing

Requested features

6 requests
  • Custom fasting periods longer than 24 hours
  • Ability to edit fasting type and duration
  • Integration with more health/fitness apps
  • Water intake tracking
  • Personalized fasting recommendations
Show 1 more
  • Improved data visualization and analytics

Intermittent Fasting Tracker Х

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Zero

Subscriptions10
  • Zero Plus Subscription2 variants$9.991 Month
  • Zero Plus Subscription7 Days trial$9.991 Month
  • Zero Plus Subscription$39.991 Year
Show 7 more
  • Zero Plus Subscription7 Days trial$49.991 Year
  • Zero Plus Subscription7 Days trial3 variants$69.991 Year
  • Zero Plus Subscription$69.991 Year
  • Zero Plus Subscription1 Year trial3 variants$69.991 Year
  • Zero Plus Subscription1 Month trial$69.991 Year
  • Zero Plus Subscription1 Month trial$89.991 Year
  • Zero Plus Subscription7 Days trial$89.991 Year
11 purchases

Intermittent Fasting Tracker Х

Subscriptions11
  • Fasting X: Premium for 1 month$4.991 Month
  • Fasting X: Premium for 1 month2 variants$12.991 Month
  • Fasting X: Premium for 1 month$14.991 Month
Show 8 more
  • Fasting X for 1 year - 60% OFF$19.991 Year
  • Fasting X for 1 year - 50% OFF2 variants$24.991 Year
  • Weight Loss app PRO - 3 months$24.993 Months
  • Fasting X - Premium for 1 year3 Days trial$24.991 Year
  • Fasting X for 1 year - 40% OFF$29.991 Year
  • Fasting X - Premium for 1 year7 Days trial2 variants$49.991 Year
  • Fasting X - Premium for 1 year$49.991 Year
  • Fasting X - Premium for 1 year3 Days trial$49.991 Year

Questions

Is Zero free?
Zero is free to download, with in-app purchases available.
Is Intermittent Fasting Tracker Х free?
Intermittent Fasting Tracker Х is free to download, with in-app purchases available.
Which has better reviews, Zero or Intermittent Fasting Tracker Х?
Intermittent Fasting Tracker Х is rated higher. Zero averages 4.8 out of 5 from 445K ratings, while Intermittent Fasting Tracker Х averages 5.0 from 2 ratings.
Do Zero or Intermittent Fasting Tracker Х have ads?
Neither Zero nor Intermittent Fasting Tracker Х shows ads.
Which is updated more often, Zero or Intermittent Fasting Tracker Х?
Zero ships an update every 2 weeks, and Intermittent Fasting Tracker Х fortnightly. Most recently, Zero was updated on September 25, 2026 and Intermittent Fasting Tracker Х on July 8, 2026.

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