Comparison

KetOne vs Circuit

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

Head to head
About

KetOne

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

About

Circuit

This app generates personalized strength workouts based on your available time, equipment, and energy levels. Log your sets quickly, track progress, and adapt your routine on the fly. It offers offline functionality and advanced features for subscribers.

Highlights
  • Generate workouts based on time, equipment, and energy
  • Create ready-to-run strength sessions
  • Log sets, reps, weights, and rest
  • Swap exercises dynamically
  • Track workout history and progress
  • Offline functionality
  • Advanced trends and insights (Pro)
Features
Read full description

Circuit helps you plan and run strength workouts that fit real life. Instead of forcing a fixed program, Circuit builds sessions around your available time, available equipment, and current readiness. Open the app, generate a ready-to-run workout, log your sets quickly, and keep momentum with progress views that show what is improving over time. Why lifters use Circuit: - Build workouts from time, equipment, and energy - Generate ready-to-run strength sessions in seconds - Log sets, reps, weights, and rest without slowing down - Swap exercises when equipment is busy or your plan changes - Track workout history, weekly trends, and long-term progress - Stay useful offline without requiring an account for core use Circuit Pro unlocks advanced trends, estimated 1RM views, plateau insights, expanded custom routine tools, and routine sharing. Terms of Service & Privacy Policy https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ https://kimoelbeshbeshy-droid.github.io/circuit-legal-pages/privacy-policy.html

Screenshots

KetOne4 screens
Circuit4 screens

Verdict

The call

The clearest difference is update cadence: Circuit at every 2 weeks against KetOne's every 2 months. KetOne's advantage is device support (3 vs 1). On price, ads, in-app purchases 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 and Circuit sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

KetOne ships an update every 2 months, Circuit every 2 weeks. The most recent releases landed on October 13, 2026 and October 5, 2026 respectively.

Scorecard2 real differences · 7 level
KetOne versus Circuit: the parameters behind the verdict, then further details
ParameterKetOneCircuit
PriceFreeFree
Rating—5.0 (4 ratings) — better
Number of ratings—4 — better
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS18.217.0 — better
Further details — not scored
Size73 MB6 MB
Age rating4+4+
DeveloperOriana Isabel Leal RamosKARIM HANY ELBESHBESHY

In-app purchases

2 purchases

KetOne

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

Circuit

Subscriptions2
  • Circuit Pro Monthly$4.991 Month
  • Circuit Pro Annual7 Days trial$44.991 Year

Questions

Is KetOne free?
KetOne is free to download, with in-app purchases available.
Is Circuit free?
Circuit is free to download, with in-app purchases available.
Do KetOne or Circuit have ads?
Neither KetOne nor Circuit shows ads.
Which is updated more often, KetOne or Circuit?
KetOne ships an update every 2 months, and Circuit every 2 weeks. Most recently, KetOne was updated on October 13, 2026 and Circuit on October 5, 2026.

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