Quick answer: For most people the best intermittent fasting app in 2026 is Fasted — the free tier runs the timer, the six protocols, the metabolic phases and the streaks, and it starts without an account. Zero is the pick if you want a large educational library and a long track record. Vora if a public feed motivates you. Fastient if you want to journal every fast. Simple if you want a coach rather than a timer. Prices, ratings and the gaps are all below.

Best Intermittent Fasting App in 2026: Top 5 Compared

The fasting app market has matured significantly since the early days of simple countdown timers. In 2026, the best apps offer metabolic phase insights, accountability features, and genuine utility that makes fasting easier and more effective.

This is an honest comparison of the top options — what each does well, what it doesn't, and who should use it. We make one of these apps, so the rules of the piece are stated up front: every price and rating below comes from the store listing, the gaps in our own app are named rather than buried, and where a competitor is plainly ahead we say so.

What Is the Best Intermittent Fasting App in 2026?

There is no single winner, and any page that names one without asking what you want is guessing on your behalf. The short version:

• Best overall, and best free — Fasted. The free tier is a complete tracker, not a trailer for the paid one, and it starts without an account.
• Best for learning the science — Zero. The biggest content library in the category and 445,000 App Store ratings behind it.
• Best for fasting with a partner — Fasted, on the strength of Fast Buddy.
• Best for public community — Vora.
• Best for journalling — Fastient.
• Best coach-style app — Simple, if you want to be talked through it rather than timed.
• Best on Apple Watch — not us. Fasted has no watch app; the watch comparison covers who does.
• Best on Android — see the Android-specific comparison, because iOS-first development makes this a different question.

What Makes a Great Fasting App in 2026?

The baseline features every fasting app should have:

• Accurate background timer
• Preset and custom fasting protocols
• Fasting history and statistics
• Streak tracking

Differentiating features that the best apps have:

• Metabolic phase display: showing what's happening in your body during the fast, not just elapsed time
• Partner/buddy features: accountability tools beyond solo notifications
• No friction to start: account-optional setup
• A free tier you can live in: for a tool you open every day, what the free version does matters more than what the paid one costs

The 2026 Fasting App Rankings

1. Fasted — Best Overall

Fasted takes the top position on the strength of what its free tier does and how fast you can start.

Strengths:

• Metabolic phase display: the standout feature — real-time view of your fasting phase during every fast, showing fat burning, ketosis, and autophagy stages
• Fast Buddy: real-time multiplayer fasting with a partner — the only major app with this feature
• A free tier that is a whole app: the timer, all six built-in protocols, phase tracking, streaks and notifications cost nothing. Fasted Pro is listed at $6.99 monthly, $29.99 yearly or $49.99 once for lifetime access, and adds the buddy, the hunger map, analytics, custom protocols and export. There is no free trial — the free tier is how you try it.
• No account required: start fasting immediately
• 26 languages, and it works entirely offline

Who it's for: Anyone who wants a complete tracker without setting up an account or paying for the basics. Good for beginners and experienced fasters alike, and the obvious pick if you want to fast alongside someone — though Fast Buddy sits on the Pro tier.

Weaknesses: This is the newest listing on the page, with far fewer ratings than Zero or Simple — if you weight app-store social proof heavily, that counts against us. There is no Apple Watch app. There is less educational content than Zero, and no integrated food logging or weight tracking.

Try it: getfasted.app

2. Zero — Best for Education

Zero has built the strongest educational content library among fasting apps. If you want to understand the science of fasting alongside tracking your fasts, Zero's content offering is excellent.

Strengths:

• Extensive educational content about fasting science
• Content attributed to medical advisors
• Polished, premium interface
• Well-established app with large user base

Weaknesses:

• Requires account creation
• Best features behind a subscription paywall (Zero Plus)
• No partner/buddy fasting feature
• Higher cost than most competitors

Who it's for: Users who value curated scientific educational content about fasting and are willing to pay for it.

See our Fasted vs Zero comparison for a full head-to-head.

3. Vora — Best for Public Social Accountability

Vora's public social feed differentiates it from solo-use apps. If community accountability from a public feed motivates you, Vora delivers that experience.

Strengths:

• Public social feed shows when users are fasting
• Clean, minimal interface
• Free basic tier

Weaknesses:

• Social feed is public (strangers, not specific people)
• Requires account creation
• No metabolic phase display
• No private partner fasting feature

Who it's for: Users who want community-level social accountability and prefer a minimalist app.

See our Fasted vs Vora comparison for details.

4. Fastient — Best for Fasting Journaling

Fastient fills a specific niche: detailed personal journaling of the fasting experience with notes, weight logging, and correlational data.

Strengths:

• In-fast note-taking and journaling
• Integrated weight tracking with fasting data
• Detailed historical charts
• Good for identifying patterns

Weaknesses:

• Requires account creation
• No metabolic phase display
• No social or partner features
• Interface less polished than top apps

Who it's for: Detail-oriented users who want to journal their fasting experience with weight and subjective notes.

See our Fasted vs Fastient comparison for details.

5. Simple Fasting — Best for Integrated Food Logging

Simple Fasting combines fasting tracking with nutritional guidance and food logging in a single platform. More comprehensive than pure fasting trackers but requires subscription for full functionality.

Strengths:

• Combines fasting and nutrition in one app
• Guided meal planning features
• Coaching elements

Weaknesses:

• Subscription required for meaningful features
• More complex than users who just want a fasting timer need
• Account required

Who it's for: Users who want fasting and nutrition guidance integrated and are willing to pay for comprehensive health platform features.

Full Feature Comparison Table

Prices and ratings are the figures on the App Store listings when we last checked them. Store pricing moves and regional prices differ — the listing is the authority, not this table.

The Right App for Different User Types

"I want to start fasting today, no hassle" → Fasted. No account, download and go.

"I want to learn about fasting science while I track" → Zero (with subscription for full content).

"I want to fast with my partner or friend" → Fasted (Fast Buddy).

"I want a community of people to fast with publicly" → Vora.

"I want to journal every fast with notes and weight data" → Fastient.

"I want a complete tracker without paying anything" → Fasted's free tier.

"I want to start a fast from my wrist" → not Fasted. Read the Apple Watch comparison first.

"I'm on Android and tired of getting the second-best build" → the Android comparison is the one to read.

"I'm leaving Zero and want a like-for-like replacement" → the Zero alternative guide walks through the six things worth checking before you switch. If you're leaving Simple, the Simple alternative guide does the same.

What's New in 2026 Fasting Apps

The trends defining the current state of fasting apps:

Metabolic intelligence: Apps moving beyond timers to show physiological context (phases, expected ketone levels, autophagy windows). Fasted leads this trend.

Social and partner features: The solo tracking model is being supplemented with connection features. The direction of travel is toward more meaningful accountability, not just public feeds.

Anti-subscription backlash: Users increasingly resist monthly billing for tools they use daily. The apps gaining ground are the ones with a free tier you can live in and a lifetime option if you want out of renting — a list the no-subscription roundup keeps up to date.

International expansion: Fasting is a global practice — apps with multilingual support have significant reach advantages. Fasted's 26-language support reflects this.

Longer fasts moving mainstream: 16:8 is no longer where the interest stops. Search volume for 24, 48 and 72-hour fasts has grown fastest of any protocol group, which is why we built the extended fast planner and the extended fasting hub around them — with the refeeding safeguards those lengths actually require.

The Bottom Line for 2026

Fasted is the best fasting app for most people in 2026: the free tier is a complete tracker, it starts without an account, and the metabolic phase display and Fast Buddy are things the rest of the category does not have. What it is not is the biggest, the oldest or the one on your wrist. Try it at getfasted.app.

For users with specific needs: Zero for education and scale, Simple for coaching, Vora for public community, Fastient for journaling.

FAQ

What is the best intermittent fasting app in 2026?

For most people, Fasted — because the free tier is a complete tracker rather than a demo, it starts without an account, and it shows the metabolic phase you are in rather than only the elapsed time. Choose Zero instead if you want the largest educational library and the longest track record, Simple if you want coaching, Vora for a public community feed, and Fastient if you want to journal every fast.

What is the best free intermittent fasting app?

Fasted's free tier is the most complete: the timer, all six built-in protocols, metabolic phases, streaks and notifications, with no account and no free trial to expire. Zero, Vora and Fastient all have usable free tiers too, but each of them wants an account first and gates more behind the paid version. The fasting apps with no subscription roundup compares what is genuinely free across the whole field.

What is the best fasting app for beginners?

The one that asks least of you on day one. That means a free tier you can start without an account, presets rather than a setup quiz, and reminders that fire when your window opens and closes. Fasted and Zero both qualify; Simple is worth a look if you would rather be coached than timed. If you have not picked a schedule yet, the free fasting schedule quiz takes about a minute.

What is the best fasting app for Android?

This is genuinely a different question, because most fasting apps are built iOS-first and the Android build lands weeks later with fewer features. The Android fasting app comparison covers notification reliability across manufacturers, widget quality and Health Connect support — the three things that actually differ on Android.

Which fasting app works on Apple Watch?

Not ours, and we would rather say so than let you find out after installing. Fasted's listing covers iPhone, iPad, Mac and Vision, with no watch app. The Apple Watch comparison explains how to tell from a store page which apps have a real watch app and which only have a complication.

What is the most popular fasting app in 2026?

Zero, by a wide margin — 445,000 App Store ratings at 4.8 out of 5 is a scale nothing else in the category is near. Fasted is a much newer listing with far fewer ratings. Popularity and fit are not the same question, which is why the rest of this page is organised by what you want rather than by download counts.

Is a paid fasting app better than a free one?

Not necessarily. Fasted's free tier includes features some paid apps do not have at all, such as the metabolic phase display. What a subscription usually buys in this category is content and coaching rather than better tracking — which is worth paying for if you will read it, and worth nothing if you won't.

Which fasting app is best for weight loss?

The app itself doesn't determine weight loss — your fasting consistency and what you eat in your window do, which is exactly what the free IF results estimator models. The best app is the one you'll actually use consistently. Fasted's design, with its accountability features and metabolic phase display, supports consistent use.

Do I need an app to do intermittent fasting?

No. But tracking increases consistency, and consistency drives results. An app is a practical tool, not a requirement.

Can I switch from another fasting app to Fasted?

Yes. You start a new fasting history in Fasted. There's no data import from other apps currently. Given that the free tier costs nothing and needs no account, the switching cost is a lost history rather than money.