Transform your health with intermittent fasting. Simple, effective, and designed for real results. No complicated setups. No overwhelming dashboards.
No email • No credit card • Start instantly
Deep fat burning mode
Track meals & hydration


Frequent meals, late-night snacking, and constant digestion keep insulin levels high and make it difficult for the body to burn stored fat.
Intermittent fasting gives your body time to rest, reset, and switch into fat-burning mode.
Our app makes the fasting process clear, structured, and easy to follow. No complicated setups, just simple tracking that works.
Intermittent fasting focuses on when you eat. By cycling between fasting and eating windows, your body can unlock powerful health benefits.
Your body switches to fat-burning mode for energy
Better blood sugar control and metabolic health
Support cellular regeneration and autophagy
Increased focus, energy, and cognitive function
Belly Fast helps you stay consistent and understand what's happening in your body at each stage of the fast.
During onboarding, Belly Fast calculates your BMI and recommends a fasting plan suited to your body. You can always adjust as you progress.
Gentle Start
12-hour fasting, 12-hour eating window
Popular Choice
18-hour fasting, 6-hour eating window
One Meal a Day
23-hour fasting, 1-hour eating window
Extended Fast
Two full days of fasting
Start simple and progress at your own pace.
No clutter. No confusing dashboards. Just the data that matters.
Choose from 12:12, 18:6, OMAD, or 48-hour fasting. Multi-day fasting support included.
Track weight, waist size, BMI, and set target goals. Easy-to-read progress visuals with unit conversion.
Hydration reminders, eating window alerts, and fasting completion notifications that work in the background.
AI-generated fasting insights and science-based guidance on what happens during your fast.
Fasting-friendly meal ideas for your eating window with nutrition-focused suggestions.
Use without an account. Optional cloud backup and sync. No data selling. Delete anytime.
Visual charts and history for weight, waist measurements, and fasting consistency.
Calculate your BMI during onboarding to get personalized fasting plan recommendations.
Unlike other fasting apps where features feel scattered and overwhelming, Belly Fast keeps everything easy to understand and focused on what matters — helping you fast consistently and burn fat smarter.
Download Belly Fast and discover a smarter, simpler way to burn fat, improve metabolic health, and build sustainable fasting habits.

