Comparison

Interval Timer HIIT Workout vs IntenSync

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

Head to head
About

Interval Timer HIIT Workout

Customize your HIIT and Tabata workouts with this versatile interval timer. Features AI voice cues from celebrity personalities, music integration, and Apple Health syncing. Track your progress and share routines with ease.

Highlights
  • Customizable work/rest periods
  • AI voice cues from celebrity personalities
  • Music integration
  • Apple Health & Apple Watch sync
  • Save and organize workouts
  • Real-time exercise on-screen cues
  • Share workouts with others
Features
Read full description

The ultimate Interval Timer for your HIIT Workouts and Tabata training! Our app is the perfect Workout Timer, offering customizable work/rest periods for High Intensity Interval Training, Tabata, Running, Boxing and circuit training. Achieve peak interval performance with our EXCLUSIVE AI Voice Cues (feat. Arnold, Snoop & The Rock) that keep you motivated without interrupting your music! Why this timer? We added voice cues from AI versions of Arnold Schwarzenegger, Snoop Dogg, and The Rock. Because honestly, who wouldn't want Arnold yelling "PUMP UP THOSE MUSCLES" between sets when you're still wondering "WTF was I thinking doing this workout"? - CUSTOMIZABLE WORKOUTS: Tailor your interval timer for any HIIT, Tabata, or circuit training session. - MUSIC INTEGRATION. Your music keeps playing while the cues run during your interval timer training - no interruptions. Who are we to judge what you listen to? - AI VOICE QUEUES. Get motivated by AI Arnold, Snoop Dogg, & The Rock for a truly fun workout timer experience. - LOCKED SCREEN MODE. Cues still play even when your phone is locked—because you shouldn't have to keep your screen on. You need to save that battery % for all that social media scrolling. - APPLE HEALTH & APPLE WATCH. Your workouts automatically sync to Apple Health with live heart rate monitoring and heart rate zones right on screen. Start a workout on your iPhone and your Watch joins in automatically. Your calories, duration, and heart rate — all tracked, all saved, zero effort. - SAVE AND ORGANIZE INTERVAL TIMER WORKOUTS. color-coded, named, and ready for quick access. Easiest thing about your workout is going to be starting the timer - the workout itself - not so much. - BIG CLEAR NUMBERS WITH COLOR CODED SCREENS - so you can see your time from a distance. Like across the gym. - REAL TIME EXERCISE ON-SCREEN CUES—enter your exercise names, and they'll show up on-screen during interval timer workouts and announce what's coming next during rest. At that point you may regret adding one extra round. - SHARE WORKOUTS WITH OTHERS – perfect for coaches with clients. Or that friend that needs to lay off donuts and do some serious sweating. Perfect for: - Interval timer training - High-Intensity Interval Training (HIIT timer training) - Tabata timer workouts - Circuit training & CrossFit - Boxing/MMA training - Strength training & cardio - Personal trainers & group fitness - Interval timer running - Forcing yourself to take a break while bindge watching Netflix (for real, you can put 40 minutes "work" and 5 minutes "rest"). Again, no judgement zone, you do what you want. Still reading? Just download. See the app for yourself.

About

IntenSync

This app helps you create and track custom interval workouts for various fitness activities. It offers voice cues, visual guidance, and progress analytics. Premium features include manual logging, hydration and nutrition planning, and community engagement.

Highlights
  • Custom interval workout builder
  • Voice cues and sound packs
  • Visual workout guidance
  • Workout progress tracking and analytics
  • Manual workout logging (Premium)
  • Hydration and nutrition planning (Premium)
  • Community and accountability features
Features
Read full description

Build workouts, follow every set and rep, and stay consistent with one focused training companion. IntenSync brings workout planning, guided exercise sessions, demonstrations, prerecorded voice coaching, progress insights, nutrition, hydration, and Apple Watch controls together in a clean, distraction-free experience. BUILD FOR YOUR GOALS Create structured routines from a preset exercise library for the gym, home, or wherever you train. • Organize exercises into sets and rounds • Choose repetitions or timed intervals • Add rest, recovery, and cooldown periods • Build strength, HIIT, Pilates, cardio, circuit, and bodyweight sessions • Save routines for quick access FOLLOW EVERY SESSION The guided workout player keeps your session moving while clearly showing what to do now and what comes next. • Rep-by-rep pacing for supported exercises • Set, round, repetition, and side tracking • Automatic rest and recovery periods • Prerecorded voice cues • Exercise demonstrations for supported movements • Controls to pause, skip, add time, mute, or finish COACHING AND TRAINING PLANS Use AI-assisted coaching to create practical workout drafts based on your goals and preferences. Review your routine before training and make adjustments when needed. Premium unlocks adaptive training plans, expanded coaching tools, exercise demonstration videos, and deeper workout insights. SEE YOUR PROGRESS Turn completed sessions into a clear view of your training consistency. • Workout history and session summaries • Recent progress • Training momentum • Completion and consistency insights • Detailed analytics with Premium SUPPORT YOUR TRAINING Log hydration and nutrition alongside your workouts. Review daily progress and keep the habits supporting your training in one place. Premium adds smarter planning and reminder tools. TRAIN WITH APPLE WATCH Premium members can use the Apple Watch companion during an active workout. • See the current exercise, set, repetitions, side, and remaining time • Pause, resume, skip, complete a set, or add time • Hear prerecorded voice cues on Apple Watch when connected • Continue voice guidance automatically on iPhone when the Watch is unavailable • View heart-rate information after granting Health access FREE AND PREMIUM Free features include the workout timer, routine builder, standard prerecorded voice guidance, recent progress, hydration tracking, and nutrition logging. Free browsing screens may contain ads, but ads are not shown during active workouts. IntenSync Premium adds AI-assisted coaching, adaptive training plans, exercise demonstration videos, detailed analytics, additional prerecorded coaching options, Apple Watch controls, and an ad-free experience. IntenSync is intended for general fitness and informational purposes. It does not provide medical advice, diagnosis, or treatment. Exercise within your abilities and consult a qualified professional when appropriate. SUBSCRIPTIONS IntenSync Premium is available through optional monthly and annual auto-renewable subscriptions. Payment is charged to your Apple ID account when your purchase is confirmed. Your subscription renews automatically unless canceled at least 24 hours before the end of the current subscription period. You can manage or cancel it through your Apple ID subscription settings. Privacy Policy: https://intensync.equilibelle.com/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Interval Timer HIIT Workout4 screens
IntenSync4 screens

Verdict

The call

The clearest difference is ratings volume: Interval Timer HIIT Workout at 334 against IntenSync's 2. IntenSync's advantage is rating (5.0 vs 4.8) and iOS requirement (14.0 vs 18.0). On price, update cadence, ads and in-app purchases 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. Interval Timer HIIT Workout sells 5 in-app purchases, starting at $1.99 per month and IntenSync sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

IntenSync holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Interval Timer HIIT Workout has 334 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Interval Timer HIIT Workout ships an update weekly, IntenSync every 6 days. The most recent releases landed on October 18, 2026 and October 6, 2026 respectively.

Scorecard3 real differences · 7 level
Interval Timer HIIT Workout versus IntenSync: the parameters behind the verdict, then further details
ParameterInterval Timer HIIT WorkoutIntenSync
PriceFreeFree
Rating4.8 (334 ratings)5.0 (2 ratings) — better
Positive reviews66.7% of reviews—
Number of ratings334 — better2
Update frequencyWeeklyEvery 6 days — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod, Apple Watch — better
Requires iOS18.014.0 — better
Further details — not scored
Size96 MB253 MB
Age rating4+12+
DeveloperRoli LLCEquilibelle App Solutions

Customer experience

Interval Timer HIIT Workout

All ratings334 ratings
Positive96.7%
Neutral1.5%
Negative1.8%
Written reviews18 reviews
Positive66.7%
Neutral11.1%
Negative22.2%

IntenSync

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

5 purchases

Interval Timer HIIT Workout

Subscriptions4
  • Monthly Subscription7 Days trial$1.991 Month
  • Monthly Subscription$2.991 Month
  • Yearly Subscription1 Year trial$29.991 Year
Show 1 more
  • Yearly Subscription7 Days trial$29.991 Year
One-time1
  • One Time Purchase$19.99
2 purchases

IntenSync

Subscriptions2
  • Monthly Premium$3.991 Month
  • Annual Premium$34.991 Year

Questions

Is Interval Timer HIIT Workout free?
Interval Timer HIIT Workout is free to download, with in-app purchases available.
Is IntenSync free?
IntenSync is free to download, with in-app purchases available.
Which has better reviews, Interval Timer HIIT Workout or IntenSync?
IntenSync is rated higher. Interval Timer HIIT Workout averages 4.8 out of 5 from 334 ratings, while IntenSync averages 5.0 from 2 ratings.
Do Interval Timer HIIT Workout or IntenSync have ads?
Both Interval Timer HIIT Workout and IntenSync show ads.
Which is updated more often, Interval Timer HIIT Workout or IntenSync?
Interval Timer HIIT Workout ships an update weekly, and IntenSync every 6 days. Most recently, Interval Timer HIIT Workout was updated on October 18, 2026 and IntenSync on October 6, 2026.

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