Fastly: Intermittent Fasting

By Micro App Digital

Coming soon to the stores

Available on: Coming soon
Developer: Micro App Digital
Privacy: Read policy

About the app.

Lose weight and take control of your eating with Fastly — the complete intermittent fasting tracker that's actually free. Start a fast in one tap and watch a beautiful timer reveal exactly what your body is doing right now: fat-burning, ketosis, and autophagy. Follow any schedule (16:8, OMAD, 5:2 and more), track your weight and progress, build streaks, and stay motivated — with no $70/year subscription. Fastly is not a medical device and does not provide medical advice.

Features

What’s inside.

Live Fasting Stages

Watch your body move through each stage as your fast progresses — fed, fat-burning, ketosis, autophagy, and growth hormone.
See exactly when you'll reach the next stage and what it does for your body — the motivation that gets you through the hard hours.

A Timer You Can Trust

One-tap start and stop, with a glowing ring that fills as you fast and shifts color with each stage.
Your elapsed time stays exact after backgrounding, a reboot, or a phone restart — because a wrong timer is the fastest way to quit.

Every Schedule, All Free

16:8, 18:6, 20:4, OMAD (23:1), 14:10, 12:12, 5:2, Warrior, Circadian, and fully custom.
Beginner to advanced — switch anytime and set a recurring weekly plan.

See Your Results

Log your weight and watch the trend move toward your goal, with BMI and body measurements.
Fasting-hours charts, average fast length, and completion rate make your progress visible.

Stay Motivated

Build streaks, take on challenges, earn milestones, and beat your longest fast.
Visible investment in your progress is what keeps you coming back every day.

Water & Smart Reminders

Track hydration and get calm, motivating reminders for fast start and end and eating-window open and close.
Motivating nudges like "you'll reach ketosis in 1 hour" and gentle log-your-weight prompts.

Learn As You Fast

Built-in guidance on fasting benefits, what breaks a fast, and the science of the stages.
Beginner tips included — no paywall on the content that helps you understand what's happening.

Free, No Subscription

All fasting protocols, live stages, weight and progress tracking, streaks, challenges, water, reminders, and content are free.
No subscription and no "shell" free tier — with an optional one-time remove-ads upgrade if you'd like a clean screen.

Policies

Read the privacy policy that applies to Fastly.

Get Fastly.

Coming soon to the App Store and Google Play.