Best Intermittent Fasting App - A Complete Guide to Top IF Trackers in 2025

Intermittent fasting (IF) has surged in popularity as an effective strategy for weight management, metabolic health, and mental clarity. There are a variety of apps offering features like customizable fasting plans, meal reminders, hydration tracking, and even motivational coaching.

Best Intermittent Fasting App - A Complete Guide to Top IF Trackers in 2025

Whether you're following the 16:8 method, alternate-day fasting, or OMAD (One Meal a Day), tracking your fasting schedule can greatly improve your consistency and success.

Based on user reviews, expert recommendations, and platform features, here are the best intermittent fasting apps to consider in 2025.

🔝 1. Zero – Intermittent Fasting Tracker

đŸ“± iOS App Store

Best for: All experience levels | Daily fasting tracker with scientific backing
Why it stands out:

  • Backed by scientific advisors, including Dr. Peter Attia
  • Offers a wide variety of fasting protocols (e.g., circadian rhythm, 16:8, 18:6, 20:4, etc.)
  • Tracks mood, weight, sleep, and glucose (with integrations)
  • Includes a growing educational content library
  • “Check-in” system keeps you mindful about your goals and progress

Limitations:

  • Some features (e.g., advanced analytics and fasting plans) are locked behind a paid “Zero Plus” subscription
  • Requires some manual input unless integrated with health trackers

According to Reddit users, Zero is widely praised for its sleek interface, accurate timers, and daily encouragement system. Many appreciate how it makes IF sustainable long-term through habit-building.

🧠 2. BodyFast

đŸ“± Google Play | Official site

Best for: Users who want coaching-based programs
Why it stands out:

  • Weekly personalized coaching plans tailored to your goals and progress
  • Built-in meal timing flexibility and hydration tracking
  • “Fasting Coach” AI adapts fasting plans weekly based on weight loss goals
  • Offers 10+ fasting plans, including 5:2, 16:8, and more advanced patterns

Limitations:

  • Full coaching functionality is available only with the premium subscription
  • Lacks strong community support or educational content compared to Zero

BodyFast is ideal for beginners and intermediate fasters who prefer a guided, adaptive experience. Its visual timeline and motivational elements make fasting easier to stick with over time.

💬 3. Fastic

🧠 Mentioned in: Women’s Health, Men’s Health, Prevention Magazine

Best for: Habit-building and educational support
Why it stands out:

  • Clear progress visualization through fasting timers and weight logs
  • Includes a built-in step counter, water tracker, and nutrition tips
  • Offers in-app educational articles and motivational notifications
  • Clean, gamified interface helps you stay engaged

Limitations:

  • Premium features include coaching and full fasting plans
  • May push upgrades more frequently than other apps

Fastic shines for those who value a holistic approach—blending fasting, nutrition education, and healthy habits in a friendly, visually appealing format.

📅 4. Window

🧠 Featured in: Women’s Health Magazine

Best for: Simple, minimal fasting tracking
Why it stands out:

  • Straightforward timer for starting/stopping fasts
  • Visual progress bar makes fasting easy to monitor
  • Sleek, distraction-free interface
  • No coaching or community—just pure tracking

Limitations:

  • Lacks customization of fasting types beyond basic time durations
  • Best suited for users who already understand IF and don’t need education or support

If you're an experienced faster or want a clean app without unnecessary features, Window may be a perfect minimalist option.

📈 5. FastHabit

🧠 Popular among Reddit users for simplicity

Best for: Experienced fasters who want no-frills tracking
Why it stands out:

  • Set your own fasting goals (e.g., 16 hours) and track consistency
  • Apple Watch support for real-time fasting tracking
  • Daily reminders and visual trend summaries

Limitations:

  • Lacks guided content or health integrations
  • Not ideal for IF beginners or those seeking motivation

FastHabit is best for disciplined users who just need a timer and streak tracker. Redditors note that it doesn’t clutter the experience with unnecessary features.

🧠 How to Choose the Best Intermittent Fasting App

When selecting an IF app, consider the following:

  • Your fasting experience level: Beginners may benefit from coaching and reminders, while seasoned fasters may only need a timer.
  • Goal alignment: Are you aiming for weight loss, metabolic health, or general lifestyle improvement?
  • Premium features vs free access: Some apps gate useful tools behind subscriptions, so evaluate what you really need.
  • Device and tracker compatibility: Integration with Apple Health, Google Fit, or wearables can enhance your insights.
  • Community and education: Some apps offer built-in support networks and science-backed learning modules to keep you informed and motivated.

Final Verdict

  • Best Overall: Zero – Offers science-backed fasting, excellent education, and habit tracking.
  • Best for Personalized Coaching: BodyFast – Great for guided plans tailored to your progress.
  • Best Minimalist App: Window or FastHabit – Ideal for no-frills, effective fasting tracking.
  • Best for Habit Building: Fastic – Combines education, movement tracking, and gamified features.

Each of these apps can support your fasting journey—but the best choice depends on your goals, experience, and need for structure or flexibility. Regardless of which you choose, consistency is key to seeing results with intermittent fasting.

Sources

Derek Harnett