Comparison

Seconds Pro Interval Timer vs Exercise HIIT Interval Timer

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

Head to head
About

Seconds Pro Interval Timer

This interval timer app is designed for high-intensity interval training (HIIT), Tabata, and circuit training workouts. It features a large, color-coded display, customizable interval names, and background operation. It also integrates with Apple Health to track your fitness data.

Highlights
  • Full screen colored display
  • Templates for HIIT, Tabata, Circuit Training
  • Speaks interval names and provides warnings
  • Assign music per interval
  • Runs in background
  • Share interval timers
  • Apple Health integration
Features
Read full description

Seconds Pro 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 Pro 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 Pro reads your body measurements and year of birth from Health to estimate calories burned. PAID ONCE, NOTHING TO UNLOCK - Seconds Pro is paid for up front. Every feature is included and every timer you make can be run as many times as you like. SECONDS AND SECONDS PRO - Seconds is the free version of this app. It has the same features, but each timer locks after one run until a single in-app purchase unlocks it. 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

Exercise HIIT Interval Timer

Design and execute custom high-intensity interval training routines with this versatile workout timer. Tailor your sessions with adjustable work and rest periods, rounds, and exercise names. Track progress and stay motivated with audio cues and spoken announcements.

Highlights
  • Customizable workout routines
  • Adjustable work and rest intervals
  • Spoken exercise announcements
  • Audio cues for timing
  • Apple Watch companion app
  • Progress monitoring
Features
Read full description

Get in shape with the ultimate HIIT exercise timer app! This powerful app is designed for all fitness levels and offers a wide range of customizable HIIT workouts to help you reach your goals. With its user-friendly interface, you can easily design your own HIIT routines, set the number of rounds, work intervals, and rest intervals, and get moving. Create a wide range of bodyweight exercises, making it easy to get a full workout in wherever you are. Whether you're at home, at the park, or on the go, you can get your heart pumping with our HIIT exercises. The built-in timer and audio cues will keep you on track, and you can monitor your progress over time to see how far you've come. Don't miss out on the opportunity to transform your fitness routine and achieve your goals with the HIIT exercise timer app. Download now and experience the power of HIIT! Here are the features you'll enjoy: - Create workouts with any exercises you like - Specify the number of rounds and exercises to meet your fitness goals - Set the length of exercises and rest periods for a customized workout - Get sound cues to let you know when the workout begins and when each exercise is about to end - Enjoy spoken announcements of exercise names to keep you motivated - Use the Apple Watch companion app to track your heart rate and energy burned during workouts Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Seconds Pro Interval Timer4 screens
Exercise HIIT Interval Timer4 screens

Verdict

The call

The clearest difference is price: Exercise HIIT Interval Timer at Free against Seconds Pro Interval Timer's $7.99. Exercise HIIT Interval Timer also leads on review sentiment (100% vs 80%) and iOS requirement (16.0 vs 18.0). Seconds Pro Interval Timer's advantage is in-app purchases (none vs 2) and update cadence (fortnightly vs every 3 months). On ads 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

Exercise HIIT Interval Timer is free to download; Seconds Pro Interval Timer costs $7.99 up front. Exercise HIIT Interval Timer sells 2 in-app purchases, starting at $0.99 per month. Seconds Pro Interval Timer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Seconds Pro Interval Timer holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Seconds Pro Interval Timer has 12K ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 80% of Seconds Pro Interval Timer's written reviews are positive against 100% of Exercise HIIT Interval Timer's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Seconds Pro Interval Timer ships an update fortnightly, Exercise HIIT Interval Timer every 3 months. The most recent releases landed on September 24, 2026 and August 13, 2026 respectively.

Scorecard9 real differences · 2 level
Seconds Pro Interval Timer versus Exercise HIIT Interval Timer: the parameters behind the verdict, then further details
ParameterSeconds Pro Interval TimerExercise HIIT Interval Timer
Price$7.99Free — better
Rating4.8 (12K ratings) — better4.5 (2 ratings)
Positive reviews79.9% of reviews100.0% of reviews — better
Number of ratings12K — better2
Update frequencyFortnightly — betterEvery 3 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
Best chart rank#10 — better—
DevicesiPhone, iPad, Apple WatchiPhone, iPad, Apple Watch
Requires iOS18.016.0 — better
Further details — not scored
Size94 MB5 MB
Age rating4+4+
DeveloperRunloop LtdMaxim Antonov

Customer experience

Seconds Pro Interval Timer

All ratings12,056 ratings
Positive94.7%
Neutral1.9%
Negative3.4%
Written reviews1,499 reviews
Positive79.9%
Neutral6.0%
Negative14.1%

Exercise HIIT Interval Timer

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Seconds Pro Interval Timer

Reported bugs

4 issues
  • Intervals randomly pausing or skipping
  • Music volume issues when launching the app
  • Inconsistent audio cues and countdown
  • Sync issues between devices

Requested features

6 requests
  • Ability to lock Apple Watch screen
  • Option to see more than just the next exercise
  • Fractional time settings (e.g. 7.74 seconds)
  • More voice/audio customization options
  • Improved sync between iPhone and iPad
Show 1 more
  • Calendar integration to track workouts

Exercise HIIT Interval Timer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Seconds Pro Interval Timer

No in-app purchases

2 purchases

Exercise HIIT Interval Timer

Subscriptions2
  • Premium3 Days trial$0.991 Month
  • Premium14 Days trial$8.491 Year

Questions

Is Seconds Pro Interval Timer free?
Seconds Pro Interval Timer costs $7.99, with no in-app purchases.
Is Exercise HIIT Interval Timer free?
Exercise HIIT Interval Timer is free to download, with in-app purchases available.
Which has better reviews, Seconds Pro Interval Timer or Exercise HIIT Interval Timer?
Seconds Pro Interval Timer is rated higher. Seconds Pro Interval Timer averages 4.8 out of 5 from 12K ratings, while Exercise HIIT Interval Timer averages 4.5 from 2 ratings.
Do Seconds Pro Interval Timer or Exercise HIIT Interval Timer have ads?
Neither Seconds Pro Interval Timer nor Exercise HIIT Interval Timer shows ads.
Which is updated more often, Seconds Pro Interval Timer or Exercise HIIT Interval Timer?
Seconds Pro Interval Timer ships an update fortnightly, and Exercise HIIT Interval Timer every 3 months. Most recently, Seconds Pro Interval Timer was updated on September 24, 2026 and Exercise HIIT Interval Timer on August 13, 2026.

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