Comparison

InFuel vs KetOne

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

InFuel

Features
Read full description

Fuel from within. Transform your body, sharpen your mind, and unlock your full potential—one fast at a time. InFuel is your personal AI-powered fasting coach designed to guide you through 24, 48, 72, and 100-hour fasts with science-backed insights, real-time body updates, and motivational support every step of the way. Whether new to fasting or leveling up your current routine, InFuel keeps you informed, inspired, and in control. - - - - - - - - f e a t u r e s Custom Fast Timer -- Start, pause, or complete your fast anytime. Track your progress hour-by-hour with a clean, minimalist timer designed to keep you focused. Real-Time Body Insights -- Know exactly what’s happening in your body as you fast—ketosis, autophagy, fat-burning, and more. InFuel delivers detailed updates based on your current hour of fasting. AI-Powered Fasting Coach -- Ask questions, get encouragement, or dive into the science behind fasting with your personal AI coach, available 24/7. Smart Reminders -- Get hydration alerts, motivational quotes, and helpful tips—timed around your fasting schedule and sleep preferences. Learn View -- Explore swipeable cards packed with knowledge about fasting safety, the stages of fat-burning, autophagy, and refeeding guidance. Sleep-Aware Notifications -- InFuel adjusts to your sleep schedule so you can rest without unnecessary alerts. Refeed Guidance -- Finish strong. InFuel provides safe, smart recommendations for breaking your fast to avoid bloating and discomfort. Fasting isn’t about going without—it’s about going within. InFuel is built to help you find clarity, discipline, and strength through intentional fasting. Download InFuel today and take the first step toward mastering your fast—one hour at a time.

About

KetOne

This app helps users plan and track intermittent fasting schedules, monitor activity, and organize nutrition. It offers a comprehensive system for long-term consistency, reducing the need for multiple health apps.

Highlights
  • Intermittent fasting timer
  • Custom fasting schedules
  • Activity and workout tracking
  • AI-assisted meal suggestions
  • Calorie and macro tracking
  • Hydration reminders
  • Apple Health integration
Features
Read full description

Ketone – Easy Fast Intermittent Fasting Tracker Ketone is an easy fast intermittent fasting tracker designed to help you plan fasting schedules, track activity, and organize nutrition in one simple app. Instead of juggling multiple tools, Ketone works as a complete fasting and metabolic tracking system built for long-term consistency. Whether you are new to fasting or looking for advanced intermittent fasting tools for diet planning, Ketone helps reduce guesswork and daily friction. INTERMITTENT FASTING MADE SIMPLE Ketone works as a fasting timer and fast tracker supporting popular protocols: 16:8 intermittent fasting OMAD Alternate-day fasting Custom fasting schedules The fasting timer is easy to use and designed for daily adherence, making Ketone a practical fasting tracker free users can start with and upgrade over time. FASTING TRACKER WITH SMART ACTIVITY SUPPORT Unlike basic fasting apps, Ketone connects your fasting timer with physical activity tracking. The app helps you plan HIIT or interval-style workouts during fasting windows and organizes recovery-focused nutrition afterward. This makes Ketone more than a fasty fasting tracker or basic fasten app — it supports fasting as part of a complete routine. MEAL PLANNING & FASTING TOOLS Ketone includes intermittent fasting tools for diet planning with AI-assisted meal suggestions focused on ketogenic and low-carb nutrition. Meals are planned around your fasting schedule and recent activity, helping you stay consistent without manual calculations. TRACK EVERYTHING IN ONE FASTING APP Ketone combines features often spread across multiple apps: Fasting tracker and fasting timer Calorie and macro tracking Water fasting app features with hydration reminders Weight and body measurement tracking Activity and workout tracking All data works together to help you stay consistent over time. APPLE HEALTH & DEVICE INTEGRATION Ketone integrates with Apple Health to sync activity, workouts, and health data. iPhone Daily fasting tracker Fast logging and notifications Apple Watch Fasting status at a glance Workout and heart rate tracking Hydration reminders iPad Weekly planning and fasting overview Meal prep and routine visualization BUILT FOR CONSISTENCY Ketone focuses on adherence instead of short-term dieting. Progress is tracked through completed fasting cycles, streaks, and routine consistency — not just hours fasted. WHO THIS FASTING APP IS FOR Users looking for an easy fasting tracker Anyone searching for a fasting app free to start Fans of apps like Zero fasting tracker, Fastic, BodyFast, EasyFast, Fasten, or Fasty People practicing intermittent fasting or water fasting Busy users who want one simple fasting tracker instead of multiple apps IMPORTANT NOTICE Ketone is designed to support fasting routines and general wellness. It does not provide medical advice. Always consult a healthcare professional before starting fasting, water fasting, or dietary changes. You can check our Terms of Use here : https://ketone.fit/terms-of-use

Screenshots

InFuel4 screens
KetOne4 screens

Verdict

The call

The clearest difference is in-app purchases: InFuel at none against KetOne's 2. KetOne's advantage is update cadence (every 2 months vs every 10 months) and device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. KetOne sells 2 in-app purchases, starting at $19.99 per 3 months. InFuel asks for nothing beyond the download.

UpkeepUpdate frequency

InFuel ships an update every 10 months, KetOne every 2 months. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 6 level
InFuel versus KetOne: the parameters behind the verdict, then further details
ParameterInFuelKetOne
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 10 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhoneiPhone, iPad, Apple Watch — better
Requires iOS18.0 — better18.2
Further details — not scored
Size2 MB73 MB
Age rating4+4+
DeveloperFishybear LLCOriana Isabel Leal Ramos

In-app purchases

None

InFuel

No in-app purchases

2 purchases

KetOne

Subscriptions2
  • Reset Cycle$19.993 Months
  • Mastery Cycle$44.991 Year

Questions

Is InFuel free?
InFuel is free to download, with no in-app purchases.
Is KetOne free?
KetOne is free to download, with in-app purchases available.
Do InFuel or KetOne have ads?
Neither InFuel nor KetOne shows ads.
Which is updated more often, InFuel or KetOne?
InFuel ships an update every 10 months, and KetOne every 2 months. Most recently, InFuel was updated on October 25, 2026 and KetOne on October 28, 2026.

Other comparisons