Fastify - Fasting Weight Loss
Intermittent Timer & Tracker
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Start your fasting journey today. Personalized 16:8, 18:6, 20:4 & OMAD plans built around your BMI. Lose weight the natural way — count hours, not calories.
Fastify is the intermittent fasting tracker built for lasting weight loss. Pick a plan, tap start, and watch the weight come off the natural way.
Unlike apps that count calories, Fastify helps you lose weight by timing your meals — a simpler, more sustainable approach backed by decades of research.
WHY FASTIFY
Fastify combines everything you need for successful intermittent fasting in one clean app: a personalized plan built around your BMI, a simple timer, weight tracking, hydration support, and gentle reminders. No calorie counting. No complicated setup. Just a focused fasting companion designed around how you actually live.
PERSONALIZED FASTING PLANS
Start with the plan that fits your body and lifestyle:
- 16:8 — the most popular fasting window
- 18:6 — for faster results
- 20:4 — the Warrior Diet
- OMAD — one meal a day
- 14:10 — perfect for beginners
- 5:2 — flexible weekly fasting
- Custom — build your own
Our fasting plan calculator creates a schedule tailored to you. No guesswork.
SIMPLE FASTING TIMER
Start your fast with a single tap. Track your fasting window and eating window in real time. Build streaks that turn into lasting habits.
WEIGHT TRACKING THAT WORKS
Log your weight and see progress charts that connect your fasting effort to real results. Watch your body transform through clear, honest data.
HYDRATION SUPPORT
Stay hydrated with built-in water tracking and smart reminders. Keep your energy steady during every fasting window.
SCIENCE-BACKED APPROACH
Fastify is built around widely studied fasting methods — supporting autophagy, ketosis, metabolic reset, and healthy insulin response. Designed for sustainable weight loss, not crash dieting.
WHO FASTIFY IS FOR
Fastify works for:
- Complete beginners starting their first fast
- Experienced fasters refining their routine
- Women managing weight through perimenopause and menopause
- Men looking for a no-nonsense weight loss tool
- Anyone ready to lose weight without counting calories
WHY USERS CHOOSE FASTIFY
- Count hours, not calories
- Personalized — not a generic template
- All four major plans supported
- Clean, focused, distraction-free
- Gentle reminders, never pushy
JOIN A FASTING CHALLENGE
Stay motivated with seasonal 30-day challenges. Build streaks, hit milestones, and turn small daily habits into lasting change.
Start your fasting journey with Fastify — pick a plan, tap start, and lose weight the natural way.
Fastify is for informational purposes and is not medical advice. Please consult a healthcare provider before starting any fasting program, especially if you are pregnant, breastfeeding, diabetic, under 18, or taking medication.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
This update includes performance improvements, design enhancements, improved usability, bug fixes, and a new Water Streak feature.
The developer, BRAINIFY (SMC-PRIVATE) LIMITED), indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Purchases
- Identifiers
Data Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Purchases
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- BRAINIFY (SMC-PRIVATE) LIMITED
- Size
- 56.3 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment information
Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Fastify Monthly Premium $4.99
- Fastify Yearly Premium $34.99
- Copyright
- © Brainify