Fasting Tracker: LeanFast
Fasting Timer & Weight Loss
About
This app is a smart intermittent fasting companion that simplifies and guides users through various fasting plans. It offers a timer, AI-powered coaching, weight tracking with predictions, and detailed analytics to help users achieve their health goals.
What's New in Fasting Tracker
1.6
November 5, 2026
Flexi — a new free plan with no set target. Start when you stop eating, end when you're ready. Journal — a new tab showing one day at a time: your fasts, weight, water, electrolytes and your daily check-in, with a week strip to move between days. Ketones and glucose — log your blood levels in the units you already use. Coming from Zero? Settings → Import fasting history brings your history with you. Milestones now unlock as you earn them, with a kilogram ladder for metric units instead of converted pounds. Settings → Features lets you hide any card you don't use.
MoreSubscriptions & In-App Purchases
LeanFast Pro
AI coaching, analytics & plans. Save 84%.
Developer apps
FAQ
What is LeanFast?
LeanFast is a smart intermittent fasting companion designed to make fasting simple, effective, and sustainable. It offers a timer, AI coaching, weight tracking, and analytics to guide users through their fasting journey.
What fasting plans does LeanFast support?
LeanFast supports a variety of customizable fasting plans, including 16:8, 18:6, 20:4, OMAD (One Meal A Day), and 5:2, among others.
Does LeanFast offer personalized guidance?
Yes, LeanFast features AI-powered coaching that provides personalized fasting tips based on your progress and offers smart meal suggestions for your eating windows.
Can LeanFast help with weight management?
LeanFast includes weight tracking with trends over time and AI-powered weight predictions to show users where they are headed, along with BMI tracking and goal setting.
Is LeanFast free to use?
All core features of LeanFast are completely free, making it an accessible tool for users looking to start or maintain their intermittent fasting routine.
Does LeanFast require an account?
No, LeanFast does not require an account, and your data stays on your device, offering enhanced privacy for users.
What health milestones can LeanFast track?
LeanFast helps users track fasting milestones such as fat burn, ketosis, and autophagy, celebrating achievements with shareable cards and providing research-informed insights into what is happening in the body.
Does LeanFast have ads?
LeanFast is ad-free, allowing users to focus on their fasting journey without interruptions.
