Zero: Fasting & Food Tracker

Zero: Fasting & Food Tracker

By Zero Longevity Science, Inc.

Score: 4.8221
4.8221
From 445,216 Ratings

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 on your entire fasting journey. • Log meals the smart way — Skip the tedious manual meal entry routine. Snap a photo and get instant macros, protein composition, and clarity on how effectively your meals support your goals. • Hit your Protein Score — Track your 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 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 includes a free version and an optional subscription for premium features. A free trial is available. Download Zero to get started. Payment for Zero Plus will be charged to your iTunes 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 by going to 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

Screenshots

Reviews

  • Formerly good, now trash

    1
    By Bafflef
    The pop-ups and ads just got worse and worse. Now it’s actually unusable if you don’t pay, which I think is a shame. Sorry nobody wanted to read your fake articles or pay monthly for your bells and whistles. If it was a one-time cost for an ad-free, simple timer, I’d be all in. But tech bros gonna tech bro I guess.
  • extremely disappointed

    1
    By 🌻Tomoyo🌻
    I’m very sad to be typing this because I’ve been a Zero user since 2020. But they updated the app and now it’s forcing us to pay for a membership in order to use the app. Not everyone can afford to throw money into an app just to track how long our fast is… I understand limiting certain features in order to encourage people to pay for their membership but this is on another level. please fix this issue, I really liked this app and now I won’t even be able to use it.
  • not free/do not download

    1
    By quienesmar
    just wanted a timer, like some other people in the reviews. don’t know why i didn’t read the reviews first but yea inescapable pop up add after they grab all your info - don’t waste your time on this app
  • They overcharged when you purchased the app

    1
    By 1957JT
    Too pushy
  • Love it - broken widget

    5
    By KJKlovesLife
    I absolutely love this app. It’s so simple. It’s so easy to use. It’s so satisfying. It’s really nice to have a goal and to reach it. The only problem is that within the last 72 hours the widget I keep on my home screen broke it. It’s just a black rectangle now. Outside of that it’s fabulous! Update 3/29: I still love this app however it crashes all the time now! I don’t know why because I don’t develop apps but I do know that if I uninstall it and reinstall it, it will work again. This is quite inconvenient.
  • So good

    5
    By atamamatma
    I love it
  • Limited food entries

    1
    By US user also
    Hit my phone in error and stopped my fast so now numbers are incorrect. I Am not going to go for the subscription. The app is too difficult to use and makes up Data for food entries by photo. Booo
  • IG Journey

    4
    By IG Pilsen
    I am focus on point this app . Glad i registered.
  • Totally revamped to be a diet!

    1
    By jeliabean
    This app was initially marginally useful enough to pay for. You could track how long you fast overnight and together with sleep, movement and mindfulness you built your pillars of health. Now it wants you to track your food and it has turned into a poorly designed dieting app! Waste of money and I’m annoyed that it is no longer what I paid for.
  • Not free👍🏻

    1
    By camden1395
    They make sure to have you create a profile and collect all your info before taking you to a screen to sign up for a monthly plan that you can’t click out of.

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