Best Ketosis Apps

249+ iOS apps curated and reviewed

4.8 avg rating
18 free apps
Updated October 2026

Looking for free ketosis apps? 18 of our 249+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Ketosis Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Fasting + Intermittent FastingFasting + Intermittent FastingFree4.8★ (6.8K)NoYesOct 2026
2Intermittent Fasting Tracker -Intermittent Fasting Tracker -Free4.9★ (29K)YesYesOct 2026
3Zero: Fasting & Food TrackerZero: Fasting & Food TrackerFree4.8★ (445K)NoYesOct 2026
4Carb Manager — Keto Diet AppCarb Manager — Keto Diet AppFree4.8★ (736K)NoYesOct 2026
5Stupid Simple Keto Diet AppStupid Simple Keto Diet AppFree4.6★ (8.9K)NoYesOct 2026
6KetoScanner: Keto DietKetoScanner: Keto DietFree—NoNoOct 2026
7BodyFast: Intermittent FastingBodyFast: Intermittent FastingFree4.7★ (146K)NoYesOct 2026
8KetoTrackerKetoTracker$1.995.0★ (1)NoNoOct 2026

Top Picks for Ketosis

Fasting + Intermittent Fasting#1

Fasting + Intermittent Fasting by Byte Puls d.o.o.

Fasting Tracker - Lose Weight
Editor's Choice
💪 Health & Fitness
4.8😊(6.8K ratings)
FreeIn-App Purchases
Fasting + Intermittent Fasting screenshot 1
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This app helps users achieve weight loss and improve metabolic health through intermittent fasting. It offers personalized plans, progress tracking, and coaching without dietary restrictions.

What We Love

  • ⭐ Excellent tracking and visualization
  • 👍 Simple and easy to use
  • 💪 Helps stay motivated and on track
  • 🔍 Detailed information on fasting stages
  • 📊 Useful data and metrics provided

Room to Improve

  • 🔍 Lack of advanced features (food/exercise logging)
  • 💸 Subscription model not well-received
  • 🔈 Intrusive ads and pop-ups
  • 🐛 Bugs and glitches (time tracking issues, app crashes)
  • 📉 Slow performance and lag
Intermittent Fasting Tracker -#2

Intermittent Fasting Tracker - by Leap Health

Easy Fast Timer, Lose Weight
Strong Contender
💪 Health & Fitness
4.9😊(29K ratings)
FreeAdsIn-App Purchases
Intermittent Fasting Tracker - screenshot 1
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This app helps users achieve sustainable weight loss and health goals through personalized intermittent fasting plans and an AI-powered calorie counter. It offers features like food scanning, hydration tracking, and detailed progress monitoring. Users can access science-based insights and healthy recipes to support their journey.

What We Love

  • 🚀 Easy to use
  • 👍 Helpful features
  • 💡 Customizable fasting plans
  • 🚀 Intuitive interface
  • 👍 Motivating progress tracking
  • 💡 Informative body stage insights
  • 🚀 Accurate calorie counting
  • 👍 Effective for weight loss

Room to Improve

  • 🐛 Inconsistent calorie tracking
  • 🔍 Limited food database
  • 💸 Excessive ads in free version
  • 🐛 Freezing/crashing issues
  • 🔍 Syncing problems with Apple Health
  • 🔍 Confusing to navigate
Zero: Fasting & Food Tracker#3
4.8😊(445K ratings)
FreeIn-App Purchases
#88in Health & Fitness
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Zero: Fasting & Food Tracker screenshot 5
Zero: Fasting & Food Tracker screenshot 6

This app tracks intermittent fasting and nutrition to help users achieve real body composition changes. It integrates fasting, protein intake, meals, hydration, and habits for a holistic approach to weight loss and metabolic health.

What We Love

  • 🚀 Easy to use
  • 📊 Helpful tracking and data
  • 💡 Informative learning resources
  • 🔍 Detailed fasting information
  • 🤝 Sense of community
  • 🎉 Motivating badges and challenges

Room to Improve

  • 💰 Expensive premium subscription
  • 🔒 Forced account creation
  • 🙄 Intrusive ads and upsells
  • 🤔 Inconsistent or confusing UI changes
  • 🐛 Syncing and login issues
  • 🙅‍♀️ Lack of free features

More Ketosis apps to explore

FAQ about Ketosis

What are the best ketosis apps for iPhone?
Fasting + Intermittent Fasting tops our ketosis apps ranking as of October 2026, with a 4.8-star average from 6.8K App Store ratings, and it's free to download.
Yes — 18 of the top ketosis apps we rank are free to download, including Fasting + Intermittent Fasting and Intermittent Fasting Tracker -.
Fasting + Intermittent Fasting has no ads and offers in-app purchases, according to its App Store listing as of October 2026.
We track 249+ ketosis apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.