Best Intermittent Fasting Apps

Fasting apps are mostly timers with a content layer. We graded which ones actually justify their subscriptions.

On this page The ranking Full reviews Comparison table How we ranked FAQ

The 2026 ranking: which intermittent fasting apps is best?

Ranked best to worst
#1

Zero Editor's Pick

The reference fasting app – clean, research-backed, no nonsense.

💰 Free; Plus $69.99/yr 🎯 Best for: Most people starting IF 📱 iOS · Android
8.7 / 10
#2

Simple

AI fasting coach with food photo logging.

💰 $29.99/mo or $89.99/yr 🎯 Best for: Combining fasting with light food tracking 📱 iOS · Android
8.1 / 10
#3

Fastic

Gamified fasting with a strong community.

💰 Free; Premium $59.99/yr 🎯 Best for: People who want a community 📱 iOS · Android
7.6 / 10
#4

DoFasting

Fasting + workout + meal-plan bundle.

💰 $46.99/3 months 🎯 Best for: All-in-one starter bundle 📱 iOS · Android
7.2 / 10
#5

Window

Minimalist fasting timer.

💰 Free; Premium $39.99/yr 🎯 Best for: Minimalists 📱 iOS
7 / 10
#6

Life Fasting Tracker

Free, dead-simple fasting tracker with social circles.

💰 Free 🎯 Best for: Anyone wanting a free option 📱 iOS · Android
6.8 / 10

Full reviews of each intermittent fasting app

#1 · Zero Editor's Pick

8.7 / 10

The reference fasting app – clean, research-backed, no nonsense.

Best for: Most people starting IF · Pricing: Free; Plus $69.99/yr · Platforms: iOS, Android

Pros

  • Clean, focused UI
  • Research-anchored content from credible advisors
  • Good HealthKit integration

Cons

  • Plus tier is needed for personalized plans
  • Some content gates feel arbitrary
Verdict: The cleanest, most evidence-respecting fasting app. Free tier alone covers 90% of users.

#2 · Simple

8.1 / 10

AI fasting coach with food photo logging.

Best for: Combining fasting with light food tracking · Pricing: $29.99/mo or $89.99/yr · Platforms: iOS, Android

Pros

  • Decent AI photo logging
  • Friendly onboarding

Cons

  • Pricey
  • Coaching is more cheerleading than science
Verdict: Fine product, aggressive pricing. Worth it only if you'll use the AI logging daily.

#3 · Fastic

7.6 / 10

Gamified fasting with a strong community.

Best for: People who want a community · Pricing: Free; Premium $59.99/yr · Platforms: iOS, Android

Pros

  • Gamification keeps streaks going
  • Big community

Cons

  • Content is shallow
  • Lots of upselling
Verdict: Good for streak-motivated people. Not a coach.

#4 · DoFasting

7.2 / 10

Fasting + workout + meal-plan bundle.

Best for: All-in-one starter bundle · Pricing: $46.99/3 months · Platforms: iOS, Android

Pros

  • Includes workouts and recipes
  • Quiz-driven personalization

Cons

  • Quiz pricing tactics are aggressive
  • Jack of all trades
Verdict: Decent bundle, slick funnel. Watch the auto-renew.

#5 · Window

7 / 10

Minimalist fasting timer.

Best for: Minimalists · Pricing: Free; Premium $39.99/yr · Platforms: iOS

Pros

  • Beautiful, minimal UI
  • No fluff

Cons

  • iOS only
  • Limited coaching
Verdict: Buy it if you want a timer and nothing else.

#6 · Life Fasting Tracker

6.8 / 10

Free, dead-simple fasting tracker with social circles.

Best for: Anyone wanting a free option · Pricing: Free · Platforms: iOS, Android

Pros

  • Free
  • Group fasting features

Cons

  • Limited insights
  • Development has been slow
Verdict: Best free option.

Best Intermittent Fasting Apps compared side-by-side

RankAppScorePricingBest for
#1 Zero 8.7/10 Free; Plus $69.99/yr Most people starting IF
#2 Simple 8.1/10 $29.99/mo or $89.99/yr Combining fasting with light food tracking
#3 Fastic 7.6/10 Free; Premium $59.99/yr People who want a community
#4 DoFasting 7.2/10 $46.99/3 months All-in-one starter bundle
#5 Window 7/10 Free; Premium $39.99/yr Minimalists
#6 Life Fasting Tracker 6.8/10 Free Anyone wanting a free option

How we tested and ranked the best intermittent fasting apps

We evaluated each app on the quality of its fasting protocols (vs. published research), coaching/behavior content, integrations (HealthKit, scales, GLP-1s), customization, and value. Apps relying on autophagy hand-waving lose points.

Does intermittent fasting work for weight loss on its own?

The evidence on intermittent fasting in 2026 is clearer than the marketing: it’s an eating schedule, not a metabolic hack. People who lose weight on IF lose it because the compressed window reduces total intake. Pair a fasting app with a calorie tracker and a weight loss coach for the actual results.

Further reading on intermittent fasting evidence

Frequently asked questions about the best intermittent fasting apps

What is the best intermittent fasting app in 2026?

Zero – it's the cleanest, most evidence-respecting fasting app, and its free tier covers most users. Simple is a strong runner-up if you want AI food logging combined with fasting.

Do I need a fasting app to do intermittent fasting?

No – a kitchen timer works. The case for an app is habit support, content, and integration with sleep/weight/HealthKit data so you can see how fasting affects the rest of your life.

Can I combine fasting with a GLP-1 medication?

Talk to your prescriber. Many people on GLP-1s already eat in compressed windows naturally because of reduced appetite. See our [GLP-1 apps ranking](/categories/glp-1-apps/) for tools that account for this.

Should I track calories while fasting?

If weight loss is the goal, yes – fasting alone doesn't override calorie intake. Pair a fasting app with a tracker like [Welling](/categories/calorie-tracking-apps/).

What is the best all-in-one weight loss app in 2026? Welling.

Welling combines calorie tracking, AI coaching, and behavior science in one app. Free to try.

2026 benchmark: 96.4% food-ID accuracy across 22,400 meals · 8.7% portion-estimation MAPE · 3.1s logs · 73% 90-day retention vs ~22% category average · 9.62/10 composite on our 11-parameter research framework.

Try Welling →