Zero: Fasting & Health Tracker
Weight Loss & Metabolic Health
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Description

Stop counting calories and start intermittent fasting with Zero, the world’s most popular fasting tracker and metabolic health app.

Zero maximizes your body’s natural fat-burning ability between your last meal today and your first meal tomorrow. Based on the science of intermittent fasting, we help you extend your natural overnight fast to increase fat burning and accelerate weight loss. By building simple, science-backed habits, you’ll lose weight, preserve muscle, and live better, longer. Best of all, you’ll do this without counting calories, tracking macros, or restricting foods.

WE’RE #1 FOR A REASON

Zero Members have lost millions of pounds — and that’s no accident. Featured in GQ, Good Housekeeping, Men’s Health, Fortune, Techcrunch, Women’s Health, The Tim Ferriss Show, The Joe Rogan Experience, and more, Zero is the world’s most popular intermittent fasting app for all skill levels, from those embarking on their first health journey to expert health and fitness coaches.

ZERO MEMBERS HAVE LOST MILLIONS OF POUNDS

Zero is a science-backed, evidence-based approach to losing weight and burning fat effectively. In just 28 days, you'll start to see transformative results, beginning with weight loss and extending to better mood and improved energy, all while transforming your relationship with food. By the 3-month mark, you'll have improved your body composition along with metabolic health markers including waist circumference, fat mass, blood pressure, glucose, and insulin. And the best part? You’ll never need another diet again.

START WITH JUST ONE TAP

The world's most popular intermittent-fasting Timer helps you track your fasts, your progress, and your goals. Start your Timer and stay on target with all the popular intermittent-fasting types, including:

• 13-HOUR FAST, or “circadian- rhythm fast,” based on research by Dr. Satchin Panda (Salk Institute) that aligns your eating window with your body’s internal clock

• 16-HOUR FAST, or the 16:8 intermittent fast, used by celebrities, athletes, and millions of Zero Members to manage weight and improve metabolic wellbeing

• 18-HOUR FAST, or 18:6, for more advanced fasters

• Other popular fasts such as OMAD (one meal a day), the 20:4 fast, and custom prolonged fasts of up to 7 days

BURN FAT FASTER

Zero has helped millions of Members form new habits and achieve their weight-loss and health-gain goals. In just a few weeks, you’ll shift your metabolism towards burning more fat with real-time tips, personalized stats, and our exclusive Fat-Burning Mode. Discover insights into the changes your body is experiencing, get daily guidance, and break through plateaus with this one-of-a-kind approach powered by the science of intermittent fasting.

EDUCATE

Learn the science behind the daily habits that help you succeed on your journey towards weight loss and health gain. Every week, the Zero science team distills cutting-edge health research down to actionable steps and delivers the latest insights on everything you need to know to get and stay healthy. You’re never alone with Zero as your guide.

MOTIVATE

Stay focused with expert-led, science-backed content, community Challenges, achievements, and more. Zero is your partner for building healthy habits that propel you towards better, lasting health.

REWARD

Streaks and Badges celebrate your daily progress throughout your health journey, helping you make progress in the short term while achieving your long term health goals.

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
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In-Apps

Zero Plus Subscription
CHF 40.00

Screenshots

User Rating

4.72 out of 5

1,665 ratings in Switzerland

5 star
1,373
4 star
192
3 star
60
2 star
7
1 star
33

Ratings History

Reviews

Really bad

flia begani on

Don’t download its bad

Non funziona piú come prima

Peter6670 on

Come nel titolo, l’applicazione non funziona piú come prima. Uso la versione PRO da oltre un anno e aggiorno ogni volta viene suggerita una nuova versione ma si va di male in peggio. Non vengono aggiornate le challenges nonostante siano state completate; non appare piú il tracciamento giornaliero della glicemia e lo stesso adesso sta accadendo coi ketoni. Sto valutando d’interrompere l’abbonamento e usare altro. Davvero frustrante!

Nag Screen

Max5754 on

Nag screen for signing up for a subscription could not be removed.

Good app

Euneos on

Good app but poor customers service

👎

Leiserich on

App war bisher unschlagbar gut. Nun aber haben die sich entschieden, die Nutzer mit Pop-Ups zu nerven, die bei jeder Nutzung mehrfach erscheinen. Man soll nämlich Abo machen! Die brauchen wohl Geld da.

Doesn’t start counting after the latest update

YannisPan on

Doesn’t start counting after the latest update

A bit meh!

Peter6670 on

There are plenty of articles which might or might not be that helpful and yet changing your own data can be a tedious task. For the past two hours I tried to change something and it is simply not possible. I regret my purchase which was primarily done to join higher challenges… well, I expected more. 😒😒😒

Widget not accurate

space_piratta on

Widgets aren’t accurately displaying fasting time anymore. I stop fasting but the widget is still counting time as active fasting

WAS a nice app

sk476 on

But nowadays you get spammed with the PRO version🤡🤡🤡🤡🥴🥴🥴

Fix this app

Jan shalwi on

I paid for this app, all was working ok then suddenly it became so useless. The time calculation is going crazy. For example, I start fasting 15 hours ago with 18 hours target and the app still showing that still 13hrs reminding. This of course mess up with the log of your fasting data. I tried to change time setting played with dates and everything - noting worked. This was very frustrating. I wrote to the support team explaining my issue and sharing screenshot, but no reply !!! Waste of my money and time !!! Thank you !

Store Rankings

Ranking History

Category Rankings

Chart
Category
Rank
Top Grossing
12
Top Grossing
16
Top Grossing
24
Top Grossing
26
Top Grossing
27

Keywords

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Revenue and Downloads

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App Info

Languages
English
Recent version
5.39.1 (22 hours ago )
Released on
Dec 23, 2016 (7 years ago )
Last updated
2 days ago