Comparison

Seconds Pro Interval Timer vs 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

Interval Timer ++

This app provides a customizable interval timer for high-intensity interval training (HIIT) and circuit workouts. Easily set up work, rest, and repeat intervals, track your progress, and integrate with your health data. Enjoy your workouts with background music and notifications.

Highlights
  • Customizable work/rest/repeat intervals
  • Supports iPhone and Apple Watch
  • Workout history in calendar view
  • Health app integration (HealthKit)
  • Background notifications
  • Listen to music during workouts
  • Premium timers for mixed fitness types
Features
Read full description

Award-winning app for your daily workouts! Simple set up, intense workout: *** One touch to set up Workout, Rest, and Repeat. *** Supports both iPhone and Apple Watch *** Colorful design, to give you some eye candy while working hard *** Multiple timers for easy access and training *** Premium timers where different fitness types are mixed *** Background notification, so you can keep working out while browsing other apps, or even when screen is locked *** Listen to your favorite music while working out *** See your workout history in calendar view Health App Integration We integrate with the health app (HealthKit) to read and track your steps data and show them in a beautiful way. Feature details: - Workout duration: 2 seconds to 8 minutes - Rest duration: 0 seconds to 8 minutes - Repeat: 20 times (50 times if purchased Premium Subscription) - Premium timers: mix fitness types, including Planks, Jumping Jack, Push Ups, Sit Ups, High Knees, Side Planks, Butt Kicks, Side Lunges, Lunges, etc. - Multiple timers for quick access - Name your timers - Swipe-to-delete timers - Drag-n-drop to reorder custom timers - 10 seconds count down, so you can get into workout position - Count down sound before next workout starts, for you to recover position - Pause and resume workout at any time - Reset at any time if workout was interrupted - Calendar view: shows your work/rest/repeat sessions - Listen to your favorite music in background, while working out the Interval Timer in foreground - Background music will be tuned down when playing workout sounds - Vibration / Haptic feedbacks between workout and rest - Ability to mute all workout sound Users say good works after usage: "I love the simplicity and ease of use of this app. It is almost exactly what I am looking for." "No frills or gimmicks, this app gives it to you straight, which is how interval timers should work IMO." "An eye-candy for your tough workouts." "Mind-blowing on how easy it is to use." "Simple. Does EXACTLY what you need." Also checkout our awesome demo video on Youtube: https://www.youtube.com/watch?v=gO_z8mN1asU Interval Timer Pro (In App Purchase): - Create unlimited number of timers for easy access - Use our premium timers - Repeat workout for more than 20 times • You can subscribe for Interval Timer Pro inside the app; subscriptions are billed monthly or annually at the rate selected depending on the subscription plan. • Alternatively a one-time payment plan is available (this is not a subscription). • Payment will be charged to your iTunes account at confirmation of purchase. • Subscriptions will automatically renew unless auto-renew is cancelled at least 24 hours before the end of current period. • Your account will be charged according to your plan for renewal within 24 hours prior to the end of the current period. • You can manage or turn off auto-renew in your Apple ID account settings at any time after purchase. • To manage your subscriptions or turn off auto-renewal: - Go to Settings > iTunes & App Store - Tap your Apple ID at the top of the screen - Tap View Apple ID. You might need to sign in or use Touch ID. - Tap Subscriptions. - Tap the subscription you want to manage. - Use the options to manage your subscription. • No cancellation of the current subscription is allowed during the active subscription period. Once purchased, refunds will not be provided for any unused portion of the term. We take the security of our customers very seriously. Read our Terms of Service at https://sunnystudio.wordpress.com/2018/08/03/interval-timer-terms-of-us/ and our Privacy Policy at https://sunnystudio.wordpress.com/2018/07/31/interval-timer-privacy-policy/ Attributions: Lock by Maxim Kulikov from the Noun Project Premium by Gregor Cresnar from the Noun Project

Screenshots

Seconds Pro Interval Timer4 screens
Interval Timer ++4 screens

Verdict

The call

The clearest difference is price: Interval Timer ++ at Free against Seconds Pro Interval Timer's $7.99. Interval Timer ++ also leads on iOS requirement (12.0 vs 18.0). Seconds Pro Interval Timer's advantage is in-app purchases (none vs 8) and ads (none vs shown). On rating, 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

Interval Timer ++ is free to download; Seconds Pro Interval Timer costs $7.99 up front. Interval Timer ++ sells 8 in-app purchases, starting at $0.99 per 2 months. Seconds Pro Interval Timer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Seconds Pro Interval Timer against 4.8 for Interval Timer ++. Both are backed by a comparable volume of ratings — 12K and 15K respectively. Written reviews are what separate them: 80% of Seconds Pro Interval Timer's written reviews are positive against 78% of Interval Timer ++'s.

UpkeepUpdate frequency

Seconds Pro Interval Timer ships an update fortnightly, Interval Timer ++ every 3 weeks. Both last shipped on September 24, 2026.

Scorecard6 real differences · 5 level
Seconds Pro Interval Timer versus Interval Timer ++: the parameters behind the verdict, then further details
ParameterSeconds Pro Interval TimerInterval Timer ++
Price$7.99Free — better
Rating4.8 (12K ratings)4.8 (15K ratings)
Positive reviews79.9% of reviews — better78.0% of reviews
Number of ratings12K15K — better
Update frequencyFortnightly — betterEvery 3 weeks
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
Best chart rank#8 — better—
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod, Apple Watch — better
Requires iOS18.012.0 — better
Further details — not scored
Size94 MB87 MB
Age rating4+4+
DeveloperRunloop LtdSunny Studio

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%

Interval Timer ++

All ratings14,778 ratings
Positive95.9%
Neutral1.7%
Negative2.5%
Written reviews536 reviews
Positive78.0%
Neutral7.5%
Negative14.6%

User reviews

Seconds Pro Interval Timer

From 12K App Store ratings

What we love

  • ⭐ Great updates
  • 🤖 Amazing voice prompts
  • 👍 Easy to use
  • 🎨 Highly customizable
  • 🔧 Versatile for various workouts

Room to improve

  • 🐛 Occasional bugs and glitches
  • 🔌 Music volume issues
  • 🔍 Complicated setup for some features
  • 🌐 Sync/sharing issues between devices
  • 🔇 Inconsistent audio cues

Interval Timer ++

From 15K App Store ratings

What we love

  • 👍 Simple and intuitive interface
  • 🚀 Straightforward interval timer functionality
  • 💡 Customizable timers and workouts
  • 🔒 No ads or in-app purchases required

Room to improve

  • 🐛 Inconsistent sound and volume issues
  • 🐛 Bugs with timer functionality and data sync
  • 🔋 High battery consumption when running in background
  • 🚫 Limited customization options for timers and workouts

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

Interval Timer ++

Reported bugs

3 issues
  • Timers not working correctly after app updates
  • Custom timers not saving or syncing across devices
  • Unexpected pausing or stopping of timers during use

Requested features

4 requests
  • Ability to name and save custom workouts
  • Option to adjust rest time for individual exercises
  • Countdown beeps or voice cues during intervals
  • Integration with Apple Watch and other fitness devices

In-app purchases

None

Seconds Pro Interval Timer

No in-app purchases

8 purchases

Interval Timer ++

Subscriptions5
  • Interval Timer Pro7 Days trial$0.992 Months
  • Interval Timer Pro3 Days trial$0.997 Days
  • Interval Timer Pro$1.997 Days
Show 2 more
  • Interval Timer Pro3 Days trial$1.991 Month
  • Interval Timer Pro for a Year7 Days trial$5.991 Year
One-time3
  • Premium Timer for One Week$2.99
  • Premium Timer for One Year$7.99
  • Premium Timer for Entire Life$8.99

Questions

Is Seconds Pro Interval Timer free?
Seconds Pro Interval Timer costs $7.99, with no in-app purchases.
Is Interval Timer ++ free?
Interval Timer ++ is free to download, with in-app purchases available.
Which has better reviews, Seconds Pro Interval Timer or Interval Timer ++?
Seconds Pro Interval Timer and Interval Timer ++ are both rated 4.8 out of 5 on the App Store, from 12K and 15K ratings respectively.
Do Seconds Pro Interval Timer or Interval Timer ++ have ads?
Interval Timer ++ shows ads; Seconds Pro Interval Timer does not.
Which is updated more often, Seconds Pro Interval Timer or Interval Timer ++?
Seconds Pro Interval Timer ships an update fortnightly, and Interval Timer ++ every 3 weeks. Most recently, Seconds Pro Interval Timer was updated on September 24, 2026 and Interval Timer ++ on September 24, 2026.

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