Comparison

FitMate HIIT Stopwatch 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

FitMate HIIT Stopwatch

This app helps you time interval training sessions, including HIIT and Tabata. It offers customizable workout structures, progress tracking, and history logging. Premium features include Strava integration and Spotify music playback.

Highlights
  • Customizable interval timers (warmup, set, rest)
  • Workout history and progress tracking
  • Save and switch between multiple workouts
  • Strava integration for automatic uploads
  • In-app Spotify music control
  • Screen timeout disable
Features
Read full description

Track your warmup/set/rest time in interval trainings, and workout history: high-intensity interval training (HIIT), tabata, Time Under Tension, etc : - Custom warmup. - Multiple warmup exercises. - Custom set and rest duration (or no rest) for each exercise with duration goal - Custom number of workout sets - Next button to move to the next exercise if you finish the current one early or hit your duration goal. - Pause stopwatch automatically at the end of a set/rest. - Customizable next exercise: skip or choose a different exercise if the planned exercise is not available and you can return to it later. - Quantity goal and actual quantity for exercise - Announce current time/set so you don't have to look at the screen all the time - Circuit vs station exercise order - Save multiple workouts for easy switching between them - Notes for warm-up, individual exercises, warm-up histories and exercise histories - Screen timeout disable - Different notification sounds for set and rest time - Workout and exercise history - Workout and exercise progress tracking - Silent mode settings: vibration only without notification sound - Sync, backup, and restore your workout, exercise, and histories across devices or app re-installation When you purchase the app, you can also: - Connect to Strava to have workout histories uploaded automatically - Play Spotify music directly from within the app I look forward to hear your feedback. This app is developed during free time, please be patient. Strava is a trademark of Strava, Inc. Spotify is a trademark of Spotify USA Inc.

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

FitMate HIIT Stopwatch4 screens
Interval Flow4 screens

Verdict

The call

The clearest difference is monetization model: FitMate HIIT Stopwatch at free with in-app purchases against Interval Flow's subscription. FitMate HIIT Stopwatch also leads on review sentiment (63% vs 48%) and iOS requirement (11.0 vs 18.6). Interval Flow's advantage is ads (none vs shown) and rating (4.7 vs 4.4). On price, in-app purchases and device support 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. FitMate HIIT Stopwatch sells 1 one-off in-app purchase 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 4.4. That said, the two scores are not equally well evidenced: Interval Flow has 168 ratings behind it against 14, so its average is the more settled of the two. Written reviews complicate that: 63% of FitMate HIIT Stopwatch'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

FitMate HIIT Stopwatch ships an update every 5 weeks, Interval Flow fortnightly. The most recent releases landed on June 11, 2026 and September 5, 2026 respectively.

Scorecard7 real differences · 3 level
FitMate HIIT Stopwatch versus Interval Flow: the parameters behind the verdict, then further details
ParameterFitMate HIIT StopwatchInterval Flow
PriceFreeFree
Rating4.4 (14 ratings)4.7 (168 ratings) — better
Positive reviews62.5% of reviews — better48.1% of reviews
Number of ratings14168 — better
Update frequencyEvery 5 weeksFortnightly — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS11.0 — better18.6
Further details — not scored
Size73 MB20 MB
Age rating4+4+
DeveloperKenZenSoft Inc.Bence Kaposzta

Customer experience

FitMate HIIT Stopwatch

All ratings14 ratings
Positive85.7%
Neutral0.0%
Negative14.3%
Written reviews16 reviews
Positive62.5%
Neutral6.3%
Negative31.3%

Interval Flow

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

In-app purchases

1 purchases

FitMate HIIT Stopwatch

One-time1
  • Permanent access$10.99
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 FitMate HIIT Stopwatch free?
FitMate HIIT Stopwatch 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, FitMate HIIT Stopwatch or Interval Flow?
Interval Flow is rated higher. FitMate HIIT Stopwatch averages 4.4 out of 5 from 14 ratings, while Interval Flow averages 4.7 from 168 ratings.
Do FitMate HIIT Stopwatch or Interval Flow have ads?
FitMate HIIT Stopwatch shows ads; Interval Flow does not.
Which is updated more often, FitMate HIIT Stopwatch or Interval Flow?
FitMate HIIT Stopwatch ships an update every 5 weeks, and Interval Flow fortnightly. Most recently, FitMate HIIT Stopwatch was updated on June 11, 2026 and Interval Flow on September 5, 2026.

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