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 helps you adopt an intermittent fasting eating pattern to achieve weight loss and improve metabolic health. It offers various fasting plans and tracks your progress, including weight and body status.

Highlights
  • Customizable fasting plans
  • Weight tracking
  • Body status monitoring
  • Water intake tracker
  • Step count integration
  • Gradual fasting options
Features
Read full description

Unlock the power of intermittent fasting to reach your goal weight and get healthy. No diet and no yo-yo effect. Improve your metabolic health and feel full of energy. What is intermittent fasting? Intermittent fasting is one of the most popular health and fitness trends. Instead of a diet, it's an eating pattern that cycles between periods of fasting and eating. It doesn't specify which foods you should eat or avoid, but when you should eat. Today, we eat 3–4 (or more) meals per day, and never feel hungry. This requires our organs to work hard all the time, and never take a break from digesting. Our eating habits may result in obesity and health problems, such as diabetes. When fasting, your body will detoxify, burn fat and regenerate. After a few weeks, you'll feel healthier and more active. Gradual fasting plans, suitable for all! Create your own fasting plan 13-11, 15-9, 16-10, 16-8, 18-6, 20-4, 23-1, 24, 36, 48, Custom 5+2 Weekly Plan : During the week, eat normally for 5 days, and choose another 2 days for a little control.Women take 500Kcal and men take 600Kcal on fasting days. You can choose to take it all at once, but a better choice is to divide 600Kcal into two meals, 250Kcal for breakfast and 350Kcal for dinner. The food should preferably be some food with high protein content but low glycemic index (GI). It is not recommended to completely eliminate carbohydrates. When eating, chew slowly and savor well. The fasting days need to be separated, such as Monday and Thursday. This light fasting plan is healthy, effective and easy to implement, allowing you to lose weight easily while enjoying the other benefits of fasting. It can be performed long-term, gradually turning it into a healthy lifestyle. 16-8 is the most popular fasting plan for weight loss. With 16 hours fasting period, your body will gradually get used to fasting. Body Status Tracker : Blood Sugar Rises Blood Sugar Falls Glycogen Reserve Drops Ketosis State More Features : - Track your weight changes - BMI(kg/m²) - Water tracker - Drink water reminder - On 'Record' Page, you can click 'Start' in the 'Daily Steps' card to read step count data from Apple Health Privacy Policy : https://wowfitness.github.io/Privacy-Policy/ Terms of Use : https://wowfitness.github.io/Terms-of-Use/

Screenshots

Zero4 screens
Intermittent Fasting Tracker ⁺4 screens

Verdict

The call

Zero and Intermittent Fasting Tracker ⁺ both sit at 4.8 stars, but that hides the real split: 84% of Intermittent Fasting Tracker ⁺'s written reviews are positive against 32% of Zero's. Intermittent Fasting Tracker ⁺ also leads on iOS requirement (15.0 vs 17.0). Zero's advantage is ads (none vs shown) and ratings volume (445K vs 982). On price, rating, update cadence 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 ⁺ sells 5 in-app purchases, starting at $3.99 per month. 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 4.9 for Intermittent Fasting Tracker ⁺. That said, the two scores are not equally well evidenced: Zero has 445K ratings behind it against 982, 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 84% of Intermittent Fasting Tracker ⁺'s.

UpkeepUpdate frequency

Zero ships an update every 2 weeks, Intermittent Fasting Tracker ⁺ every 3 weeks. The most recent releases landed on October 31, 2026 and October 30, 2026 respectively.

Scorecard5 real differences · 6 level
Zero versus Intermittent Fasting Tracker ⁺: the parameters behind the verdict, then further details
ParameterZeroIntermittent Fasting Tracker ⁺
PriceFreeFree
Rating4.8 (445K ratings)4.9 (982 ratings) — better
Positive reviews32.2% of reviews84.2% of reviews — better
Number of ratings445K — better982
Update frequencyEvery 2 weeks — betterEvery 3 weeks
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
Best chart rank#111 — better—
DevicesiPhone, Apple WatchiPhone, iPod, Apple Watch — better
Requires iOS17.015.0 — better
Further details — not scored
Size195 MB152 MB
Age rating17+12+
DeveloperZero Longevity Science, Inc.At Ease Ltd.

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 ratings972 ratings
Positive96.7%
Neutral0.7%
Negative2.6%
Written reviews322 reviews
Positive84.2%
Neutral8.1%
Negative7.8%

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

Intermittent Fasting Tracker ⁺

From 982 App Store ratings

What we love

  • 💕 Cute and adorable design
  • 👍 Easy to use and intuitive
  • 🚀 Comprehensive tracking features
  • 💰 Affordable one-time premium option
  • 🌱 Motivating plant growth feature

Room to improve

  • 🔒 Premium required for custom fasting times
  • 🔍 Limited food/meal tracking options
  • 🐛 Occasional bugs and glitches
  • 🔧 Difficulty unsubscribing from premium

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 ⁺

Reported bugs

3 issues
  • Fasting progress not always accurately tracked
  • Dynamic island widget not displaying time properly
  • Issues with importing weight data from Apple Health

Requested features

4 requests
  • Larger and more customizable widgets
  • Ability to sync with fitness trackers and health apps
  • More detailed calorie/macro tracking
  • Option to add friends and view their progress

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
5 purchases

Intermittent Fasting Tracker ⁺

Subscriptions3
  • Monthly Subscription$3.991 Month
  • Monthly Subscription$4.991 Month
  • Premium Yearly7 Days trial$19.991 Year
One-time2
  • Lifetime$27.99
  • Lifetime2 variants$36.99

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 ⁺?
Intermittent Fasting Tracker ⁺ is rated higher. Zero averages 4.8 out of 5 from 445K ratings, while Intermittent Fasting Tracker ⁺ averages 4.9 from 982 ratings.
Do Zero or Intermittent Fasting Tracker ⁺ have ads?
Intermittent Fasting Tracker ⁺ shows ads; Zero does not.
Which is updated more often, Zero or Intermittent Fasting Tracker ⁺?
Zero ships an update every 2 weeks, and Intermittent Fasting Tracker ⁺ every 3 weeks. Most recently, Zero was updated on October 31, 2026 and Intermittent Fasting Tracker ⁺ on October 30, 2026.

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