Comparison

Zero vs Fasting Tracker App

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

Fasting Tracker App

This app helps users track intermittent fasting for weight loss and healthy lifestyle development. It offers customizable timers, various fasting plans, and progress insights. Integrates with Apple Health and Apple Watch for seamless data management.

Highlights
  • Customizable fasting timer
  • 15+ fasting plans
  • Create custom plans
  • Progress tracking with Insights
  • Apple Watch support
  • Apple Health integration
  • Widgets for progress view
Features
Read full description

Fasta is a simple, beautiful, and customizable fasting tracker app. Its elegant interface makes it super easy to track your ongoing fasts and also see your progress over time. Intermittent fasting is one of the most popular, healthy, and effective weight-loss method. Fasta will help you reach your weight goals and develop a healthy lifestyle. Key features of the app: • Customise fasting timer with 3 different shapes and 50+ beautiful color themes • 15+ different fasting plans to choose from • Create custom fasting plans • Track your progress with Insights • 100% private, all the data is stored in the iCloud account • Understand what's happening inside your body while fasting • Dark Mode support • Apple Watch support • Siri Shortcuts support • Apple Health app integration helps keep your weight data in sync • View your progress with widgets Some of the popular fasting plans are: • 16-hour fast, or the 16:8 Intermittent Fast, where you fast for 16 hours and have an 8-hour feeding window. • Circadian Rhythm Fast, this 13-hour fast starts around sunset to align your eating window with your body’s clock. Fasta automatically calculates the daily sunset for you. • 18-hour fast, or 18:6 for more advanced fasters • Other popular fasts include OMAD (one meal a day), 20:4 fast, and custom fasts up to 7 days Fasting plans available in the app: • Beginner - 12:12, 13:11, 14:10, 15:9 • Intermediate - 16:8, 17:7, 18:6, 19:5 • Advanced - 20:4, 21:3, 22:2, 23:1 • Circadian Rhythm Plans: Straight, Reversed • Alternate Day Plan - 36:12 • Custom Plans Read more about our Terms & Conditions and Privacy Policy here: https://miary.app/fasta/privacy_terms.html We are always there for you! - If you are facing any issues or have questions, please feel free to email us. Hope you enjoy using our app as much as we do! :)

Screenshots

Zero4 screens
Fasting Tracker App4 screens

Verdict

The call

Zero and Fasting Tracker App both sit at 4.8 stars, but that hides the real split: 61% of Fasting Tracker App's written reviews are positive against 32% of Zero's. Fasting Tracker App also leads on device support (4 vs 2) and iOS requirement (13.0 vs 17.0). Zero's advantage is ratings volume (445K vs 866) and update cadence (every 2 weeks vs every 6 weeks). On price, rating, 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 Fasting Tracker App sells 4 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Zero holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Zero has 445K ratings behind it against 866, so its average is the more settled of the two. Written reviews complicate that: 32% of Zero's written reviews are positive against 61% of Fasting Tracker App's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Zero ships an update every 2 weeks, Fasting Tracker App every 6 weeks. The most recent releases landed on November 1, 2026 and October 29, 2026 respectively.

Scorecard6 real differences · 5 level
Zero versus Fasting Tracker App: the parameters behind the verdict, then further details
ParameterZeroFasting Tracker App
PriceFreeFree
Rating4.8 (445K ratings) — better4.6 (866 ratings)
Positive reviews32.2% of reviews61.0% of reviews — better
Number of ratings445K — better866
Update frequencyEvery 2 weeks — betterEvery 6 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
Best chart rank#135 — better—
DevicesiPhone, Apple WatchiPhone, iPad, iPod, Apple Watch — better
Requires iOS17.013.0 — better
Further details — not scored
Size195 MB37 MB
Age rating17+4+
DeveloperZero Longevity Science, Inc.Akash Jain

Customer experience

Zero

All ratings445,285 ratings
Positive96.3%
Neutral2.1%
Negative1.6%
Written reviews1,393 reviews
Positive32.2%
Neutral8.5%
Negative59.3%

Fasting Tracker App

All ratings862 ratings
Positive89.7%
Neutral4.8%
Negative5.6%
Written reviews264 reviews
Positive61.0%
Neutral14.4%
Negative24.6%

User reviews

Zero

From 445K App Store ratings

What we love

  • 🚀 Easy to use
  • 📊 Helpful tracking and data
  • 💡 Informative learning resources
  • 🔍 Detailed fasting information
  • 🤝 Sense of community

Room to improve

  • 💰 Expensive premium subscription
  • 🔒 Forced account creation
  • 🙄 Intrusive ads and upsells
  • 🤔 Inconsistent or confusing UI changes
  • 🐛 Syncing and login issues

Fasting Tracker App

From 866 App Store ratings

What we love

  • 🚀 Simple and straightforward
  • 👍 Customizable fasting plans
  • 🚀 Clean and intuitive interface
  • 👍 Helpful insights and guidance
  • 🚀 Accurate fasting tracking

Room to improve

  • 🐛 Apple Watch sync issues
  • 🔍 Limited customization options
  • ⏱️ No timer for eating window
  • 💰 Overcharging for discounted offers
  • 🔍 Lack of advanced features

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

Fasting Tracker App

Reported bugs

3 issues
  • Fasting streak not tracking properly
  • Widget not working on iOS 16
  • Unable to restore in-app purchases

Requested features

5 requests
  • Add timer for eating window
  • Improve Apple Watch integration
  • Expand customization options
  • Implement monthly/weekly view
  • Add water tracking functionality

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
4 purchases

Fasting Tracker App

Subscriptions2
  • Fasta Monthly3 Days trial$1.991 Month
  • Fasta Yearly7 Days trial$10.991 Year
One-time2
  • Fasta Lifetime$9.99
  • Fasta Lifetime$19.99

Questions

Is Zero free?
Zero is free to download, with in-app purchases available.
Is Fasting Tracker App free?
Fasting Tracker App is free to download, with in-app purchases available.
Which has better reviews, Zero or Fasting Tracker App?
Zero is rated higher. Zero averages 4.8 out of 5 from 445K ratings, while Fasting Tracker App averages 4.6 from 866 ratings.
Do Zero or Fasting Tracker App have ads?
Neither Zero nor Fasting Tracker App shows ads.
Which is updated more often, Zero or Fasting Tracker App?
Zero ships an update every 2 weeks, and Fasting Tracker App every 6 weeks. Most recently, Zero was updated on November 1, 2026 and Fasting Tracker App on October 29, 2026.

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