Best Intermittent Fasting App in 2026
Quick Answer: The best intermittent fasting app depends on what you need. Fasted offers the strongest combination of fasting schedules, weight tracking, meal logging, and stats in a clean interface with a free tier. Zero is great for simplicity and science content. Simple leads in AI coaching. BodyFast has the most fasting plans. Read on for the full breakdown.
Intermittent fasting apps have matured significantly. What started as simple countdown timers now includes meal logging, weight tracking, AI coaches, and social features. But more features do not always mean a better experience. Sometimes they mean more upsells.
We tested the seven most popular fasting apps in 2026 and evaluated them on the features that actually matter: timer reliability, schedule flexibility, tracking depth, free tier generosity, and overall user experience. Here is what we found.
How We Evaluated These Apps
Every app was tested on both iOS and Android over a minimum of two weeks. We looked at:
- Fasting timer accuracy and reliability across schedules
- Schedule variety including 16:8, 18:6, 20:4, OMAD, 5:2, and ADF
- Tracking features like weight, meals, water, and mood
- Stats and insights that help you understand your progress
- Free tier value versus what sits behind a paywall
- Design and usability for daily use without friction
For a deeper look at which features deserve your attention, see our guide on fasting app features that actually matter.
The 7 Best Intermittent Fasting Apps in 2026
1. Fasted
Fasted takes a focused approach to fasting. Instead of trying to be a social network, meal plan service, and wellness platform all at once, it does the core things exceptionally well: fasting timer, multiple built-in schedules, weight tracking, meal logging, detailed stats, and streak tracking.
The design is clean and minimal. You open the app, start your fast, and everything you need is right there. No onboarding quiz that takes ten minutes. No aggressive paywall before you can use basic features.
Best for: People who want a reliable, complete fasting tracker without the noise.
2. Zero
Zero has been around since the early days of fasting apps and has built a strong reputation. The app is well-designed, offers good educational content through its blog and in-app articles, and the basic timer works well. The recent Zero Plus subscription added nutrition features and more detailed insights.
Best for: Users who value science-backed content alongside their tracking.
Read our full Fasted vs Zero comparison for a detailed breakdown.
3. Simple
Simple has invested heavily in AI coaching and weight loss positioning. The app asks detailed questions during onboarding and provides personalized recommendations. The AI coach can answer fasting questions and offer encouragement. The interface is polished, though the app leans hard into its premium subscription.
Best for: Beginners who want guided, coach-like support.
4. BodyFast
BodyFast is a German company generating significant revenue, largely through its Coach feature. The app offers over 50 fasting plans and the Coach adapts your schedule based on your progress. The free tier is functional but limited.
Best for: People who want a wide variety of structured fasting plans.
See our Fasted vs BodyFast comparison for more detail.
5. Fastic
Fastic has built one of the largest user bases in the fasting app space. Its social features, including community challenges and a social feed, set it apart. The app also includes meal plans and recipes, making it more of a lifestyle platform than a pure fasting tracker.
Best for: Users who are motivated by community and social accountability.
6. Life Fasting Tracker
Life Fasting Tracker has open-source roots and was one of the first apps to introduce social fasting circles, where groups of people can fast together. The app is straightforward and functional, though its design and feature set have not kept pace with newer competitors.
Best for: Groups who want to fast together and track as a team.
7. WINDOW
WINDOW is a lesser-known option that focuses on simplicity. It provides a clean timer with basic tracking. Development has been slower than competitors, but it remains a solid option for people who want the absolute minimum.
Best for: Minimalists who only need a timer and nothing else.
Feature Comparison Table
| Feature | Fasted | Zero | Simple | BodyFast | Fastic | Life | WINDOW |
|---|---|---|---|---|---|---|---|
| Fasting Timer | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Multiple Schedules (6+) | Yes | Limited | Yes | Yes (50+) | Yes | Yes | Limited |
| Weight Tracking | Yes | Yes (Plus) | Yes | Yes | Yes | No | No |
| Meal Logging | Yes | Yes (Plus) | Limited | No | Yes | No | No |
| Detailed Stats/Insights | Yes | Yes (Plus) | Yes | Yes (Coach) | Yes | Basic | Basic |
| Streak Tracking | Yes | No | No | No | No | No | No |
| AI Coaching | No | No | Yes | No | No | No | No |
| Social Features | No | No | No | No | Yes | Yes | No |
| Free Tier Quality | Strong | Good | Limited | Limited | Moderate | Good | Good |
| Starting Price (Annual) | Free/$29.99 | Free/$69.99 | $29.99+ | Free/$49.99 | Free/$39.99 | Free | Free |
Pricing Comparison
Pricing varies significantly across these apps. Some offer generous free tiers while others gate essential features behind subscriptions.
Fasted provides a strong free tier that includes the fasting timer, multiple schedules, and basic tracking. Premium unlocks detailed stats, advanced insights, and additional features at a competitive price point.
Zero recently restructured pricing with Zero Plus, which bundles nutrition tracking and advanced insights at $69.99 per year. The free tier remains functional for basic timer use.
Simple tends to be among the more expensive options when you factor in the AI coaching features. BodyFast's Coach is a separate subscription tier. Fastic sits in the middle of the range.
For a thorough analysis of what you actually get for free versus paid, read our free vs paid fasting apps guide.
What to Look for in a Fasting App
Not every feature matters equally. A fasting timer that works reliably is table stakes. Beyond that, the features that make the biggest difference for long-term success are:
Schedule flexibility. You will likely change your fasting protocol over time. An app that supports 16:8 today and OMAD next month without friction saves you from switching apps. Fasted includes six major protocols built in.
Weight and meal tracking. Fasting does not exist in a vacuum. Tracking what you eat during your eating window and how your weight responds gives you the data to make informed decisions. Apps that integrate meal tracking alongside fasting save you from juggling multiple apps.
Stats that tell a story. Raw numbers are not helpful. You need trends, streaks, and insights that show whether your approach is working over weeks and months, not just today.
A design you will actually use. If the app feels cluttered, slow, or annoying, you will stop opening it. The best fasting app is the one you use consistently.
Check out our full guide on features that actually matter when choosing a fasting app.
The Verdict
There is no single best fasting app for everyone. But there is likely a best one for you.
If you want a complete, well-designed fasting tracker with weight tracking, meal logging, multiple schedules, and real stats without the bloat, Fasted is the strongest option in 2026. It does the essential things well and stays out of your way.
If you prioritize AI coaching, Simple is worth a look. If community matters most, Fastic or Life have social features that Fasted does not. If you want dozens of structured plans, BodyFast delivers. And if you value science content alongside tracking, Zero has excellent educational material.
The best advice: try two or three and see which one you actually open every day. Consistency matters more than features you never use.
Frequently Asked Questions
What is the best free intermittent fasting app?
Fasted offers one of the most generous free tiers among fasting apps, including the fasting timer, multiple schedules, and basic tracking. Zero and Life also have decent free versions, though Zero gates several features behind its Plus subscription. Most apps offer free timers but lock stats, insights, and advanced features behind paywalls.
Are fasting apps worth paying for?
It depends on your goals. If you only need a timer, a free tier works fine. If you want detailed stats, weight tracking, meal logging, and insights that help you optimize your approach, a premium subscription can provide real value. The key is whether you will actually use the premium features consistently.
Do I need an app to do intermittent fasting?
No. People fasted successfully for decades without apps. But a good app makes it easier to stay consistent, track your progress, and understand patterns over time. The best fasting timer apps add structure and accountability that many people find helpful.
Which fasting app has the best timer?
Most major fasting apps have reliable timers. The differences come down to interface design and what surrounds the timer. Fasted pairs its timer with schedule flexibility, streak tracking, and detailed stats. Zero keeps it minimal. Simple wraps the timer in coaching prompts. Choose based on the experience you prefer around the timer itself.
Can I switch fasting apps without losing my data?
Most fasting apps do not support data import from competitors. If you switch, you will likely start fresh. This is one reason to choose carefully early on, though the most important data, your habits and knowledge, travels with you regardless.