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  • Zero: Fasting & Food Tracker screenshot 1
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  • Zero: Fasting & Food Tracker screenshot 3
  • Zero: Fasting & Food Tracker screenshot 4

About Zero: Fasting & Food Tracker

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

Ratings & reviews

4.8

445K ratings

5 ★ 89% 4 ★ 8% 3 ★ 2% 2 ★ 0% 1 ★ 1%

What’s new

Version 7.15.0 · Updated October 5, 2026

Fasting, hands-free. This update makes Zero easier to reach when you're on the go, with enhanced Siri support for fasting and a quicker way into meal logging. • Fasting with Siri: Start, end, or check on your fast just by asking — try "Start my fast in Zero." Zero now works with Siri automatically, with no setup needed, and is updated for the new Siri in iOS 27. • Quicker Meal Logging: Add the new Log Meal control to your Lock Screen, Control Center, or Action button to jump straight into logging a meal. Requires iOS 18 or later. • Bug Fixes: Fixed an issue that could prevent logging your weight on iOS 27, and improved compatibility with the latest version of iOS.

App privacy

The developer, Zero Longevity Science, Inc., reported these privacy practices to Apple.

Data Linked to You

The following data, which may be collected and linked to your identity, may be used for the following purposes:

  • Health & Fitness: Health, Fitness
  • Identifiers: User ID
  • Usage Data: Product Interaction
  • Diagnostics: Performance Data, Other Diagnostic Data, Crash Data
  • Location: Coarse Location
  • Contact Info: Name, Email Address
  • User Content: Photos or Videos

Used for: Analytics, Product Personalization, App Functionality

Alternatives to Zero: Fasting & Food Tracker

Looking for apps like Zero: Fasting & Food Tracker? Here are 6 similar apps on the App Store. The highest rated is Fasting Tracker • Easy Fast (5.0/5), and all 6 are free to download.

Zero: Fasting & Food Tracker vs. alternatives
App Rating Price Last updated Compare
Zero: Fasting & Food Tracker 4.8 / 5 (445,319 ratings) Free October 5, 2026
Fasting Tracker & Diet App 4.6 / 5 (12,441) Free Feb 5, 2025 Compare
Intermittent Fasting Tracker: 4.9 / 5 (52,199) Free Oct 29, 2026 Compare
Fasting Tracker by Numify 4.7 / 5 (5,929) Free Oct 29, 2026 Compare
Fasting Tracker • Easy Fast 5.0 / 5 (9,144) Free Oct 22, 2026 Compare
Fastin: Intermittent Fasting 4.8 / 5 (10,156) Free May 13, 2026 Compare
Fastic Weight Loss & Fasting 4.8 / 5 (246,084) Free Oct 14, 2026 Compare

Compare Zero: Fasting & Food Tracker with the top alternatives: ratings, updates, ASO score and keyword gaps →