Comparison

Seconds Interval Timer vs Interval Timer HIIT Workout

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

Head to head
About

Seconds Interval Timer

This app provides a versatile interval timer for various workout types like Tabata, HIIT, and circuit training. It features a clear, full-screen display, customizable alerts, and background operation. Users can also utilize a stopwatch and countdown timer, with integration for Apple Health.

Highlights
  • Full-screen colored display
  • Templates for HIIT, Tabata, Circuit Training
  • Voice and audio alerts
  • Music assignment per interval
  • Background operation
  • Apple Health integration
  • Stopwatch and countdown timer
Features
Read full description

Seconds is an interval timer for HIIT, Tabata, EMOM, circuits and any workout built from timed intervals. It calls each interval out loud, keeps running with the screen off, and runs on iPhone, iPad and Apple Watch. Apple has featured it, and Joe Wicks, The Body Coach, has said it is the fitness app he uses more than any other. BUILD ANY WORKOUT - Start from a HIIT, Tabata or circuit template, or build a timer from scratch with sets, rounds and intervals of different lengths. - Chain timers into one compound timer, so a warm-up flows into the main set and then a cool-down. - Color-code every interval so you know what is coming before the beep. - Share a timer with a friend in one tap. HEAR IT, DON'T WATCH IT - Voice cues call out each interval by name and warn you before the next one starts. - Beeps and bells are there too if you would rather not be talked at. - Play your own music, per timer or per interval. Cues duck the music and it comes back up when they are done. - The timer keeps going in the background while you use other apps or the screen sleeps. ON THE GYM FLOOR - A full-screen, color-coded display you can read from across the room, in portrait or landscape. On iPad it uses the whole screen. - A lock button stops a stray tap from pausing your set. APPLE WATCH - Seconds runs on the watch by itself, so the phone can stay in the locker. Timers you build on the phone sync to the wrist, and Quick Intervals builds a basic circuit on the watch itself. MORE TIMERS - A stopwatch that marks your best and worst laps. - A countdown timer with five preset durations (three on Apple Watch). APPLE HEALTH - Save workouts and mindful sessions to Health. With a heart rate monitor connected, Seconds reads your body measurements and year of birth from Health to estimate calories burned. FREE TO TRY, ONE PAYMENT TO UNLOCK - Everything is available from the first launch. Build any timer and run it. - Each timer locks after you run it once. A single in-app purchase removes the lock on every timer you make. SECONDS AND SECONDS PRO - Seconds Pro is the same app, paid once up front, with nothing to unlock. The two are separate products and a purchase in one does not carry over to the other. If you bought Seconds Pro, download Seconds Pro. If you bought the unlock in Seconds, download Seconds and use Restore Purchases.

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.

Screenshots

Seconds Interval Timer4 screens
Interval Timer HIIT Workout4 screens

Verdict

The call

The clearest difference is ads: Seconds Interval Timer at none against Interval Timer HIIT Workout's shown. Seconds Interval Timer also leads on ratings volume (24K vs 328) and review sentiment (75% vs 67%). Interval Timer HIIT Workout's advantage is update cadence (weekly vs monthly). On price, rating, in-app purchases and monetization model 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. Seconds Interval Timer sells 1 one-off in-app purchase and Interval Timer HIIT Workout sells 5 in-app purchases, starting at $1.99 per month. 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 Seconds Interval Timer against 4.8 for Interval Timer HIIT Workout. That said, the two scores are not equally well evidenced: Seconds Interval Timer has 24K ratings behind it against 328, so its average is the more settled of the two. Written reviews are what separate them: 75% of Seconds Interval Timer's written reviews are positive against 67% of Interval Timer HIIT Workout's.

UpkeepUpdate frequency

Seconds Interval Timer ships an update monthly, Interval Timer HIIT Workout weekly. The most recent releases landed on October 3, 2026 and October 1, 2026 respectively.

Scorecard4 real differences · 6 level
Seconds Interval Timer versus Interval Timer HIIT Workout: the parameters behind the verdict, then further details
ParameterSeconds Interval TimerInterval Timer HIIT Workout
PriceFreeFree
Rating4.7 (24K ratings)4.8 (328 ratings) — better
Positive reviews74.9% of reviews — better66.7% of reviews
Number of ratings24K — better328
Update frequencyMonthlyWeekly — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Apple WatchiPhone, iPad, Apple Watch
Requires iOS18.018.0
Further details — not scored
Size95 MB109 MB
Age rating4+4+
DeveloperRunloop LtdRoli LLC

Customer experience

Seconds Interval Timer

All ratings23,673 ratings
Positive93.0%
Neutral1.9%
Negative5.2%
Written reviews1,245 reviews
Positive74.9%
Neutral6.2%
Negative18.9%

Interval Timer HIIT Workout

All ratings328 ratings
Positive97.0%
Neutral1.2%
Negative1.8%
Written reviews18 reviews
Positive66.7%
Neutral11.1%
Negative22.2%

Bugs and requests

Seconds Interval Timer

Reported bugs

2 issues
  • Timer sometimes stops working unexpectedly
  • Issues with restoring purchases on new devices

Requested features

5 requests
  • Ability to change beep/alert volume independently
  • Option to delay transition between intervals
  • Sync workouts across devices
  • More preset workout templates
  • Heart rate monitoring integration

Interval Timer HIIT Workout

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Seconds Interval Timer

One-time1
  • Advanced Version$7.99
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

Questions

Is Seconds Interval Timer free?
Seconds Interval Timer is free to download, with in-app purchases available.
Is Interval Timer HIIT Workout free?
Interval Timer HIIT Workout is free to download, with in-app purchases available.
Which has better reviews, Seconds Interval Timer or Interval Timer HIIT Workout?
Interval Timer HIIT Workout is rated higher. Seconds Interval Timer averages 4.7 out of 5 from 24K ratings, while Interval Timer HIIT Workout averages 4.8 from 328 ratings.
Do Seconds Interval Timer or Interval Timer HIIT Workout have ads?
Interval Timer HIIT Workout shows ads; Seconds Interval Timer does not.
Which is updated more often, Seconds Interval Timer or Interval Timer HIIT Workout?
Seconds Interval Timer ships an update monthly, and Interval Timer HIIT Workout weekly. Most recently, Seconds Interval Timer was updated on October 3, 2026 and Interval Timer HIIT Workout on October 1, 2026.

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