Your Fasting Journey,
Simplified

The easiest way to track intermittent fasting. One tap to start. Beautiful insights to keep you going.

4.7★ App Store Rating
16:8 Most Popular Plan
🍽️ Start Fasting Today
FastMinder fasting timer

Choose Your Fasting Plan

Popular intermittent fasting schedules, all built in. Or create your own custom plan.

🕐

16:8

16 hours fasting, 8 hours eating. The most popular plan for beginners.

Most Popular

18:6

18 hours fasting, 6 hours eating. A step up for experienced fasters.

🔥

20:4

20 hours fasting, 4 hours eating. Also known as the Warrior Diet.

🍽️

OMAD

One Meal A Day. 23 hours fasting with a single eating window.

📅

5:2

Eat normally 5 days, reduce calories 2 days per week.

Custom

Create any fasting schedule that fits your lifestyle.

Flexible

What Happens to Your Body When You Fast

Your body goes through distinct metabolic phases during a fast. FastMinder tracks where you are in real time.

0-4 hrs

Fed State

Your body is digesting and absorbing nutrients. Blood sugar and insulin levels are elevated as energy is stored in cells. This is normal after eating.

4-8 hrs

Early Fasting

Blood sugar and insulin begin to drop. Your body starts tapping into stored glycogen (sugar reserves in your liver) for energy. Hunger may peak during this window.

8-12 hrs

Fat Burning Begins

Glycogen stores start depleting. Your body increasingly switches to burning stored fat for fuel. Insulin drops to baseline levels. This is where the magic starts.

12-18 hrs

Ketosis and Deep Fat Burning

Your liver begins producing ketones from fat, providing clean fuel for your brain. Many people report enhanced mental clarity and focus. Fat burning accelerates significantly.

18-24 hrs

Autophagy and Cellular Renewal

Your body activates autophagy, its natural recycling system. Damaged proteins and old cellular components are broken down and recycled. Growth hormone levels increase, supporting muscle preservation.

24+ hrs

Deep Autophagy

Extended fasting deepens the cellular cleanup process. Immune cells are recycled and regenerated. This level is for experienced fasters doing periodic extended fasts.

FastMinder shows your current fasting phase on the timer screen, so you always know what your body is doing.

Everything You Need to Fast Successfully

Simple tools that make fasting feel effortless.

One-Tap Fasting Timer

Start your intermittent fast with a single tap. The beautiful countdown timer shows exactly where you are in your fasting window, how much time remains, and what phase your body is in. No complicated setup, no confusing menus, no clutter.

FastMinder sends smart notifications when your eating window opens and closes, so you never have to watch the clock. Set it and forget it. The app handles the rest while you focus on your day.

  • Visual countdown with fasting phases
  • Smart notifications for window changes
  • Auto-detect eating and fasting periods
FastMinder intermittent fasting timer showing countdown and fasting phases

Track Your Weight Progress

Log your weight daily or weekly and watch your progress unfold in clear, easy-to-read charts. FastMinder calculates your trend line so you can see past the normal day-to-day fluctuations and focus on the bigger picture.

Your weight data syncs seamlessly with Apple Health, so entries from your smart scale or the Health app appear automatically. No double entry needed. Everything stays in sync across your devices.

  • Visual weight trend charts over weeks and months
  • Two-way Apple Health sync for weight data
  • BMI tracking and goal progress indicators
FastMinder weight tracking chart with trend line and Apple Health sync

Apple Watch Companion App

Your fasting status is always one glance away. The FastMinder Apple Watch app shows your current fasting state, time remaining, and progress right on your wrist. Start, pause, or end fasts without ever pulling out your phone.

Add FastMinder complications to your watch face for at-a-glance fasting progress throughout the day. Whether you use a simple circle complication or a detailed one, your fasting status is always visible.

  • Full fasting timer on your wrist
  • Watch face complications for quick glances
  • Start, pause, and stop fasts from Apple Watch
FastMinder home screen widgets showing fasting timer and progress

Fasting History and Insights

Every fast you complete is saved and organized in your personal fasting journal. View your complete history by day, week, or month. See patterns in your fasting behavior and identify what schedules work best for your lifestyle.

FastMinder tracks your fasting streaks, average duration, total hours fasted, and longest fast. These stats keep you motivated and give you a clear picture of your consistency over time. Many users have logged thousands of fasting hours.

  • Complete fasting history with calendar view
  • Streak tracking to build consistency
  • Total hours fasted and average duration stats
FastMinder fasting history calendar and streak tracking

How It Works

1

Choose Your Plan

Pick from 16:8, 18:6, 20:4, OMAD, 5:2, or create a custom schedule.

2

Start Fasting

Tap once to begin. The timer counts down and notifies you when your window ends.

3

Track Progress

Watch your streaks grow. See weight trends. Build the fasting habit for life.

Why Intermittent Fasting Works

Backed by research. Practiced by millions.

⚖️

Weight Management

Intermittent fasting helps your body tap into fat stores for energy. Studies show it can be as effective as calorie counting for sustainable weight loss.

🧠

Mental Clarity

Many fasters report improved focus and concentration during fasting windows. Your body produces more BDNF, a protein linked to brain health.

❤️

Metabolic Health

Research links IF to improved insulin sensitivity, lower inflammation, and better cholesterol levels. Your metabolism adapts and becomes more efficient.

🔋

Cellular Renewal

Fasting triggers autophagy, your body's natural recycling process. Old, damaged cells are cleared out and replaced with new, healthy ones.

Why People Switch to FastMinder

Built for fasters who want simplicity, not another subscription trap.

FastMinder

  • No account required, just open and start
  • Core features completely free
  • Clean, clutter-free interface
  • Full Apple Watch app included
  • Apple Health sync (steps, water, weight)
  • No ads in your fasting experience
  • All fasting plans built in
  • Lightweight, under 30 MB

Other Fasting Apps

  • Require account creation and email
  • Paywall basic features after trial
  • Cluttered with meal plans and upsells
  • Watch app often requires premium
  • Limited or no Health app integration
  • Ads or "upgrade" banners everywhere
  • Custom plans locked behind subscription
  • Bloated, 200+ MB downloads

Works With Your Favorite Devices

📱 iPhone
Apple Watch
❤️ Apple Health
🤖 Android
📊 HealthKit
🔔 Widgets

Real Results from Real Fasters

Millions Fasts tracked by users around the world
4.7★ Average rating across 315+ reviews
6 Built-in fasting plans plus custom schedules
★★★★★

"Simple and beautiful. I have tried every fasting app and this is the only one that stuck. No bloat, just what you need."

App Store Review
★★★★★

"The Apple Watch app is a game changer. I can check my fast without pulling out my phone. Love the clean design."

App Store Review
★★★★★

"Finally a fasting app that does not try to sell me a meal plan. Just a great timer and weight tracker. Exactly what I wanted."

App Store Review

Part of the Funn Media health ecosystem

Frequently Asked Questions

What is intermittent fasting?

Intermittent fasting (IF) is an eating pattern that cycles between periods of fasting and eating. It does not specify which foods to eat, but rather when you should eat them. Popular methods include 16:8 (16 hours fasting, 8 hours eating), 18:6, 20:4 (Warrior Diet), and OMAD (One Meal A Day). FastMinder supports all of these schedules plus fully custom plans.

Is FastMinder free to use?

Yes, FastMinder is free to download and use. The core fasting timer, weight tracking, fasting history, and Apple Watch features are all available at no cost. Premium features are available for those who want additional insights and customization.

Does FastMinder work with Apple Watch?

Yes, FastMinder includes a full Apple Watch companion app. You can start, pause, and track fasts directly from your wrist. Add complications to your watch face for at-a-glance fasting status throughout the day. The app syncs seamlessly between your iPhone and Apple Watch.

Which intermittent fasting schedule is best for beginners?

The 16:8 method is the most popular starting point for beginners. You fast for 16 hours (including sleep) and eat within an 8-hour window. For example, eat between 12 PM and 8 PM, then fast until noon the next day. FastMinder makes it easy to try different schedules and find what works for you.

Does FastMinder sync with Apple Health?

Yes, FastMinder integrates with Apple Health (HealthKit) for reading and writing steps, water intake, and weight data. Your weight entries sync automatically between FastMinder and the Health app, so you never have to enter data twice.

Can I create a custom fasting schedule?

Absolutely. While FastMinder includes popular preset schedules like 16:8, 18:6, 20:4, OMAD, and 5:2, you can also create a completely custom fasting schedule tailored to your lifestyle and goals.

FastMinder

Start Your Fasting Journey Today

Free to download. No account required. Just tap and start fasting.