The World’s Most Popular Intermittent Fasting App

No more fads, gimmicks, and expensive supplements. With Zero, you can lose weight — and keep it off — without making any sacrifices. Studies show that intermittent fasting is more effective than traditional calorie counting, because fasting narrows down when you eat, not what.

All you have to do is start your Fasting Timer. Along the way, you’ll receive personalized guidance and individualized stats to hone in on and accelerate your progress. You’ll also get access to expert-led content and exclusive in-app challenges.

The Loop helps you visualize your journey and celebrate wins across the Four Pillars of Health. As you log or sync your data, you’ll see the corresponding color for each Pillar added to the Loop. Watch as your smart choices add up over days, weeks, months, and years.

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.