Comparison

Zero vs Intermittent Fasting. Tracker

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

This app guides users through intermittent fasting routines to support weight loss and improve overall well-being. It offers customizable plans, progress tracking, and expert health insights to help users achieve their wellness goals.

Highlights
  • Intuitive and user-friendly interface
  • Comprehensive fasting and eating window tracking
  • Customizable intermittent fasting plans (e.g., 16:8)
  • Progress visualization with graphs
  • Expert articles on fasting and nutrition
  • Fasting timer with start/stop functionality
Features
Read full description

Intermittent Fasting Tracker: Your Ultimate Guide to a Healthier You! Welcome to the Intermittent Fasting Tracker, the essential app to help you achieve your wellness goals with ease. Whether you're a seasoned intermittent faster or just starting your journey, our app is designed to support and guide you every step of the way. Embrace a healthier lifestyle and discover the benefits of intermittent fasting today! Why Choose Intermittent Fasting Tracker? - Intuitive and User-Friendly: Our app is designed with simplicity in mind, making it easy for anyone to start and stick to their fasting routine. - Comprehensive Tracking: Monitor your fasting periods and eating windows with ease. - Personalized Insights: Gain valuable insights into your progress and make informed decisions to optimize your health. Key Features - Fasting Timer: Start and stop your fast with a single tap. - Customizable Plans: Choose from various intermittent fasting plans such as 14:10, 16:8, 18:6, and more. Tailor your plan to suit your lifestyle. - Progress Tracking: Visualize your journey with intuitive graphs that display your fasting history and achievements over time. - Health Insights: Stay informed with expert articles and tips on intermittent fasting, nutrition, and overall well-being. Benefits of Intermittent Fasting - Natural Weight Loss: Burn fat effectively without dieting or intense exercise. - Enhanced Energy Levels: Feel more active and vibrant throughout the day. - Improved Mental Clarity: Boost your brain function and stay focused. - Better Metabolic Health: Improve your body's metabolic markers, including blood pressure, glucose levels, and insulin sensitivity. Is Intermittent Fasting Safe? Yes! Intermittent fasting is a natural and safe way to improve your health. By giving your body a break from constant digestion, you allow it to switch to fat-burning mode, enhancing your overall well-being. However, if you have any health concerns, please consult your doctor before starting any fasting regimen. Join the Community. Become a part of a growing community of individuals who have transformed their lives with intermittent fasting. Share your progress, stay motivated, and achieve your health goals together. Free Trial Offer. Enjoy a risk-free trial period with the freedom to cancel anytime. --- Disclaimer: The contents of this app are intended for informational purposes only and not for rendering medical advice.Please seek medical advice before beginning any fasting or dietary regimen. Privacy Policy: https://www.stellarapps.io/privacy/ Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ --- Download the Intermittent Fasting Tracker now and embark on your journey to a healthier, happier you! Your fasting aspirations are within your grasp – together, we can achieve them!

Screenshots

Zero4 screens
Intermittent Fasting. Tracker4 screens

Verdict

The call

Zero and Intermittent Fasting. Tracker both sit at 4.8 stars, but that hides the real split: 60% of Intermittent Fasting. Tracker's written reviews are positive against 32% of Zero's. Zero's advantage is ratings volume (445K vs 130) and chart position (#135 vs unranked). On price, rating, update cadence 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. Zero sells 10 in-app purchases, starting at $9.99 per month and Intermittent Fasting. Tracker sells 7 in-app purchases, starting at $2.99 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 — 4.8 for Zero against 4.7 for Intermittent Fasting. Tracker. That said, the two scores are not equally well evidenced: Zero has 445K ratings behind it against 130, so its average is the more settled of the two. Written reviews are what separate them: 32% of Zero's written reviews are positive against 60% of Intermittent Fasting. Tracker's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on November 1, 2026 and October 23, 2026 respectively.

Scorecard3 real differences · 8 level
Zero versus Intermittent Fasting. Tracker: the parameters behind the verdict, then further details
ParameterZeroIntermittent Fasting. Tracker
PriceFreeFree
Rating4.8 (445K ratings) — better4.7 (130 ratings)
Positive reviews32.2% of reviews60.0% of reviews — better
Number of ratings445K — better130
Update frequencyEvery 2 weeksEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
Best chart rank#135 — better—
DevicesiPhone, Apple Watch — betteriPhone
Requires iOS17.016.0 — better
Further details — not scored
Size195 MB57 MB
Age rating17+4+
DeveloperZero Longevity Science, Inc.Stellar Apps SL

Customer experience

Zero

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

Intermittent Fasting. Tracker

All ratings130 ratings
Positive92.3%
Neutral3.1%
Negative4.6%
Written reviews5 reviews
Positive60.0%
Neutral0.0%
Negative40.0%

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

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
7 purchases

Intermittent Fasting. Tracker

Subscriptions7
  • Fasting Tracker App - 1 Week$2.997 Days
  • Fasting Tracker App - 1 Month3 Days trial$4.991 Month
  • Fasting Timer - 1 Week$5.007 Days
Show 4 more
  • Fasting Tracker App - 1 Week3 Days trial$5.007 Days
  • Fasting Tracker App - 1 Year$34.991 Year
  • Fasting Tracker - 1 Year$35.001 Year
  • Intermittent Fasting - 1 Year3 Days trial$35.001 Year

Questions

Is Zero free?
Zero is free to download, with in-app purchases available.
Is Intermittent Fasting. Tracker free?
Intermittent Fasting. Tracker is free to download, with in-app purchases available.
Which has better reviews, Zero or Intermittent Fasting. Tracker?
Zero is rated higher. Zero averages 4.8 out of 5 from 445K ratings, while Intermittent Fasting. Tracker averages 4.7 from 130 ratings.
Do Zero or Intermittent Fasting. Tracker have ads?
Neither Zero nor Intermittent Fasting. Tracker shows ads.
Which is updated more often, Zero or Intermittent Fasting. Tracker?
Zero ships an update every 2 weeks, and Intermittent Fasting. Tracker every 2 weeks. Most recently, Zero was updated on November 1, 2026 and Intermittent Fasting. Tracker on October 23, 2026.

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