Comparison

Workout Timer Interval & HIIT 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

Workout Timer Interval & HIIT

This app offers customizable interval timers for various training styles like HIIT, Tabata, and Crossfit. Track your progress, enjoy background music, and switch between light and dark modes to enhance your fitness routine.

Highlights
  • Customizable interval timers
  • Supports HIIT, Tabata, WOD, Crossfit, EMOM, AMRAP
  • Historical workout tracking
  • Background music playback
  • Light and dark mode themes
  • Intuitive interface
Features
Read full description

The simplest way to time any workout. Set your intervals, hit start, and go. Free forever - no trials, no expiry, no catch. Whether you're doing HIIT, Tabata, boxing rounds, running intervals, circuit training, or just need a reliable stopwatch, Interval Trainer gets out of your way and lets you focus on the work. FREE - FOREVER - Unlimited interval timers with custom rounds, work, and rest periods - Segment-based timing with Warm-up, Prep, Work, Rest, and Cool-down phases - Color and sound cues so you never miss a transition - Runs in the background while your music keeps playing - 6 themes and light/dark mode PREMIUM - Workout history - track progress and stay consistent - Custom workout builder - save and reuse your favourite sessions - Ad-free experience Download free and start your first session in under a minute. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.termsfeed.com/live/6125dabf-a638-49d7-b81e-118dfbb88572

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

Workout Timer Interval & HIIT4 screens
Interval Flow4 screens

Verdict

The call

The clearest difference is monetization model: Workout Timer Interval & HIIT at free with in-app purchases against Interval Flow's subscription. Workout Timer Interval & HIIT also leads on iOS requirement (16.1 vs 18.6). Interval Flow's advantage is rating (4.7 vs 4.5). On price, review sentiment, 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. Workout Timer Interval & HIIT sells 3 in-app purchases, starting at $2.99 per month 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

Interval Flow holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 145 and 168 respectively. Written reviews complicate that: 53% of Workout Timer Interval & HIIT's written reviews are positive against 48% of Interval Flow's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on September 21, 2026 and September 5, 2026 respectively.

Scorecard3 real differences · 7 level
Workout Timer Interval & HIIT versus Interval Flow: the parameters behind the verdict, then further details
ParameterWorkout Timer Interval & HIITInterval Flow
PriceFreeFree
Rating4.5 (145 ratings)4.7 (168 ratings) — better
Positive reviews53.2% of reviews — better48.1% of reviews
Number of ratings145168 — better
Update frequencyFortnightlyFortnightly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, Apple WatchiPhone, iPad
Requires iOS16.1 — better18.6
Further details — not scored
Size29 MB20 MB
Age rating4+4+
DeveloperSimon JansenBence Kaposzta

Customer experience

Workout Timer Interval & HIIT

All ratings145 ratings
Positive86.9%
Neutral5.5%
Negative7.6%
Written reviews47 reviews
Positive53.2%
Neutral14.9%
Negative31.9%

Interval Flow

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

In-app purchases

3 purchases

Workout Timer Interval & HIIT

Subscriptions2
  • Monthly subscription$2.991 Month
  • Premium Yearly$14.991 Year
One-time1
  • Premium$29.99
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 Workout Timer Interval & HIIT free?
Workout Timer Interval & HIIT 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, Workout Timer Interval & HIIT or Interval Flow?
Interval Flow is rated higher. Workout Timer Interval & HIIT averages 4.5 out of 5 from 145 ratings, while Interval Flow averages 4.7 from 168 ratings.
Do Workout Timer Interval & HIIT or Interval Flow have ads?
Neither Workout Timer Interval & HIIT nor Interval Flow shows ads.
Which is updated more often, Workout Timer Interval & HIIT or Interval Flow?
Workout Timer Interval & HIIT ships an update fortnightly, and Interval Flow fortnightly. Most recently, Workout Timer Interval & HIIT was updated on September 21, 2026 and Interval Flow on September 5, 2026.

Other comparisons