Comparison

Fitenium vs Interval Flow

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

Head to head
About

Fitenium

This app uses AI to create personalized workout plans and track your fitness progress. It offers injury prevention alerts based on your training data and allows you to monitor personal bests, visualize evolution graphs, and track body weight and heart rate.

Highlights
  • AI-generated personalized workouts
  • Human-certified coach reviewed programs
  • Workout planning and tracking
  • Injury risk alerts with digital twin
  • Personal bests and progress visualization
  • Body weight and heart rate tracking
  • Integration with Apple Health/Google Fit
Read full description

FITENIUM app is the application and online community for GenAI-powered training and injury prevention. At FITENIUM app, you will be able to craft your truly personalised workout using Generative Artificial Intelligence or find a training program reviewed by a Human Certified Coach. You will be able to plan and track your own workout program. FITENIUM is a Truemed qualified company. This means that your payments could be eligible for HSA/FSA reimbursement. Qualify here: https://app.truemed.com/fitness/qualify/tm_qual_vabfzbjmat. *Your first workout with FITENIUM* Choose how you want to train - We know that each person likes to train in a different way, that's why at FITENIUM we provide you with an option for each case. Create your workout - Choose create your workout if you want to plan your training program by defining your sessions, exercises and reps for each workout. Find your workout - Choose Find your personalised training program if what you are looking for is a custom workout according to your level, available equipment, goals and frequency, etc. Track your workout - Choose Track your workout if you want to define exercises, reps and weights that you are going to train in your session. If you train with a coach, we recommend it. *Your injury alerts* Access your health profile - Tap on the heart icon that appears on your personal profile screen to access your private health profile. Meet your digital twin - At FITENIUM you have a visual digital twin that represents your localised state of fatigue in real time as you train and recover. Avoid injuries while training - Thanks to your digital twin, we are able to analyse your data and send you personalised alerts about where and when you are at risk of injury, based on your workouts. *Track your progress* Review your personal bests - In FITENIUM you have a section in your profile with all your personal bests according to the exercises you have tracked during your training. Visualize your evolution - For each exercise you will have an evolution graph in which you will find your progress in the time range of your selection. Analyze your exercise history - In FITENIUM you can access the history of repetitions and weights for each exercise. You can use this information to program and adjust your sets while you are training. *Track your weight* Follow your body weight - Measure your weight daily at your health profile. In FITENIUM you will be able to visualize a chart with your progress and easily enter new weights. *Your heart rate while you train* Your heart rate working out - Connect FITENIUM to any wearable synced with Apple Health or Google FIT to track your heart rate during your workouts. This will enable you to follow your exercise intensity and plan your workouts better. Your heart rate evolution - You might check the evolution of your average heart rate across your workout sessions at your progress charts in your health profile. *Never miss a workout* Your workout awaits you - Want to change a song on Spotify? Want to drop a message to someone? Receive a call at the gym? NO PROBLEMO since FITENIUM will always keep your training session open as long as you don't finish or cancel it. *Create a training habit with FITENIUM* Transform your training into a digital experience - Share your sessions with the rest of the community, adding photos and videos to the exercises and reps of your workout. Visualise your workout- Swipe left on each post to find the muscle fatigue visualisation of each shared workout. Track your weekly streaks - At each user's profile picture, you will see the number of weeks in a row they have been tracking their training with the FITENIUM app. *Connect with friends* Invite your friends - If you know other friends who you think would like to train with you using FITENIUM, you can easily invite them from the invite screen. Terms of use: https://fitenium.com/en/terms-and-conditions/

About

Interval Flow

This app revolutionizes fitness routines with deep customization and advanced tracking for various activities like HIIT, Yoga, and CrossFit. It allows users to create, share, and follow personalized workouts with features like color-coded intervals, real-time progress tracking, and voice assistance.

Highlights
  • Color-coded intervals
  • Customizable circuits
  • Real-time progress tracking
  • Voice assist and search
  • Exercise library
  • Workout sharing
Features
Read full description

Interval Flow: Experience a Workout Revolution Interval Flow is your ultimate fitness companion, designed to transform your workout experience with deep customization and advanced tracking. This versatile app is perfect for a wide range of activities including HIIT, TABATA, CrossFit, Yoga, Pilates, Meditation, and more. With Interval Flow, you can stay focused on your fitness goals while the app handles the details. Key Features: - Color-Coded Intervals: Customize your workout visually with color-coded intervals. Set distinct colors for warm-ups, high-intensity bursts, rest periods, and more, to easily navigate through your routine. - Exercise Library: Build your workouts with ease! Add new exercises or select from the existing ones to tailor your workout to your specific needs. - Real-Time Progress Tracking: Keep a live tab on your workout progress. The dynamic interval list updates in real-time, ensuring you know exactly where you are in your routine. - Customizable Circuits: Create the perfect workout sequence by arranging various exercises into repeatable circuits tailored to your fitness level and goals. - Personalized Interval Warnings: Get timely alerts before an interval ends. Customize the warning sounds to suit your style, ensuring smooth transitions without missing a beat. - Interactive Workflow: Enjoy crafting your workouts with a user-friendly interface that’s as intuitive as it is functional. Setting up your ideal workout regime is now as engaging as the workout itself. - Voice Assist: Let our advanced voice assist guide you through your exercises, announcing what’s next so you can remain focused on your form and intensity. - Voice Search: Quickly find your favorite workouts using voice commands, making your preparation seamless and hands-free. - AirShare: Share your custom workouts with friends or clients effortlessly using AirDrop, enhancing connectivity and interaction. Why Choose Interval Flow? With Interval Flow, you don't just exercise, you experience a revolution in workout efficiency and enjoyment. The app’s intuitive interface and comprehensive customization options make it the optimal companion for anyone serious about fitness. Whether you're powering through a high-intensity session or seeking tranquility in yoga, Interval Flow adapts to your pace and preference. Unlock your potential with Interval Flow – where your workout meets innovation. Interval Flow Subscription: The app includes a 1 month long auto-renewable subscription with a 3-day free trial, which will unlock premium features, like unlimited workouts, timer program editing and autoplay and costs $4.99/ month. It will be charged to your credit card through your iTunes account and will automatically renew unless you canceled at least 24 hours before the end of the current period. Any unused portion of a free trial period will be forfeited when you purchase the subscription. Though your subscription for the current month cannot be canceled, you can turn auto-renewal off in your account settings after purchase. See the instructions here: https://support.apple.com/en-us/HT202039 You can read the terms of use and privacy policy here: https://kapi90.github.io/hiit_timer_privacy_policy.html End User License Agreement (EULA) of the App Store applies: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Fitenium4 screens
Interval Flow4 screens

Verdict

The call

The clearest difference is monetization model: Fitenium at free with in-app purchases against Interval Flow's subscription. Fitenium also leads on iOS requirement (13.4 vs 18.6). Interval Flow's advantage is review sentiment (48% vs 34%). On price, rating, ratings volume and update cadence 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. Fitenium sells 9 in-app purchases, starting at $24.90 per 3 months and Interval Flow sells 10 in-app purchases, starting at $4.99 per 3 months. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for Fitenium against 4.7 for Interval Flow. Both are backed by a comparable volume of ratings — 120 and 167 respectively. Written reviews are what separate them: 34% of Fitenium's written reviews are positive against 48% of Interval Flow's.

UpkeepUpdate frequency

Fitenium ships an update every 9 days, Interval Flow fortnightly. Both last shipped on November 3, 2026.

Scorecard3 real differences · 7 level
Fitenium versus Interval Flow: the parameters behind the verdict, then further details
ParameterFiteniumInterval Flow
PriceFreeFree
Rating4.7 (120 ratings)4.7 (167 ratings) — better
Positive reviews34.4% of reviews48.1% of reviews — better
Number of ratings120167 — better
Update frequencyEvery 9 days — betterFortnightly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPodiPhone, iPad
Requires iOS13.4 — better18.6
Further details — not scored
Size49 MB20 MB
Age rating4+4+
DeveloperFITENIUM S.L.Bence Kaposzta

Customer experience

Fitenium

All ratings120 ratings
Positive94.2%
Neutral0.0%
Negative5.8%
Written reviews32 reviews
Positive34.4%
Neutral6.3%
Negative59.4%

Interval Flow

All ratings168 ratings
Positive93.5%
Neutral2.4%
Negative4.2%
Written reviews27 reviews
Positive48.1%
Neutral18.5%
Negative33.3%

User reviews

Fitenium

From 120 App Store ratings

What we love

  • 👍 Great app for fitness goals
  • 💡 Innovative and modern app
  • 💪 Helps prevent injuries
  • 📈 Tracks progress visually
  • ✅ User-friendly and helpful

Room to improve

  • ❌ App no longer working
  • ❌ Vendor removed the app
  • ❌ Unusable due to bugs
  • ❌ Repeated errors during setup
  • ❌ Inability to connect with Apple Health

Interval Flow

From 167 App Store ratings

What we love

  • 👍 Nicely designed with good features
  • 👍 Unique and brilliantly for keeping fit
  • 👍 Simplicity gets it done

Room to improve

  • 🐛 App crashes on launch
  • 🐛 App doesn't remember interval settings
  • 🐛 App rearranges workout order
  • 🐛 Cannot see questionnaire properly
  • 🐛 Robot voice with no visual instructions

Bugs and requests

Fitenium

Reported bugs

17 issues
  • App removed by vendor
  • AI workout plan errors
  • Unable to connect to Apple Health
  • Changes to workouts are lost
  • App stuck at loading screen
Show 12 more
  • App repeatedly fails after onboarding
  • Billing issues for non-subscribers
  • App not loading after last iOS update
  • Onboarding 'Continue' button not working
  • App hangs on loading screen
  • Long load times during setup
  • Blank white screen when loading
  • App crashes after registration
  • Registration errors and freezing
  • Cannot log in
  • Subscription payment issues
  • App not loading properly after update

Requested features

7 requests
  • Add Apple TV version
  • Add Apple Watch companion app
  • Integrate HealthKit
  • Add more workout options
  • Allow selection of workout equipment (treadmill, elliptical)
Show 2 more
  • Allow selection of single or double limb exercises
  • Explain exercises in multiple languages

Interval Flow

Reported bugs

10 issues
  • Programs deleted after update
  • App crashes when adding a program
  • Show/Hide Instructions adds time to interval
  • App defaults to unused workout
  • Cannot permanently skip to end of timed activity
Show 5 more
  • Intervals revert to previous settings
  • App won't remember order of custom circuit interval programs
  • Blank screen after download
  • Cannot get program to open
  • Cannot see bottom of screen on questionnaire

Requested features

5 requests
  • Increase repetitions to 20
  • Streamline adding intervals
  • Make it possible to hide unused workouts
  • Add music integration or option
  • Provide visual instructions for moves

In-app purchases

9 purchases

Fitenium

Subscriptions8
  • Fitenium PRO$24.903 Months
  • Fitenium Pro7 Days trial$31.991 Year
  • Fitenium PRO7 Days trial$31.991 Year
Show 5 more
  • Fitenium PRO7 Days trial$39.951 Year
  • Fitenium PRO2 variants$45.906 Months
  • Fitenium PRO7 Days trial$49.991 Year
  • Fitenium PRO7 Days trial$59.901 Year
  • Fitenium PRO1 Year trial$79.901 Year
One-time1
  • Fitenium PRO LifetimeFree
10 purchases

Interval Flow

Subscriptions8
  • 3 Month$4.993 Months
  • 1 Month$9.991 Month
  • 1 Month, 3 day trial3 Days trial$9.991 Month
Show 5 more
  • Annual7 Days trial$14.991 Year
  • 1 Year discounted$25.951 Year
  • 1 Year, 3 day trial3 Days trial$39.991 Year
  • 1 Year$39.991 Year
  • 1 Year Intro month1 Month trial$39.991 Year
One-time2
  • Free Lifetime subscriptionFree
  • Lifetime$24.99

Questions

Is Fitenium free?
Fitenium is free to download, with in-app purchases available.
Is Interval Flow free?
Interval Flow is free to download, with in-app purchases available.
Which has better reviews, Fitenium or Interval Flow?
Interval Flow is rated higher. Fitenium averages 4.7 out of 5 from 120 ratings, while Interval Flow averages 4.7 from 167 ratings.
Do Fitenium or Interval Flow have ads?
Neither Fitenium nor Interval Flow shows ads.
Which is updated more often, Fitenium or Interval Flow?
Fitenium ships an update every 9 days, and Interval Flow fortnightly. Most recently, Fitenium was updated on November 3, 2026 and Interval Flow on November 3, 2026.

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