Seconds Pro Interval Timer vs Pacer Fitness
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
Read full descriptionHide 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.
Pacer Fitness
This app provides a beautiful and intuitive interval timer to help you maximize your workouts. Easily create, customize, and share timers with friends, and enjoy seamless music integration. It's designed to help you reach your fitness goals faster.
- Intuitive interval timer visualization
- Easy timer creation and customization
- Apple Watch integration
- Timer sharing with friends
- Autostart workout feature
- Seamless music integration
- Featured workouts for beginners
Read full descriptionHide full description
REACH YOUR FITNESS GOALS FASTER WITH PACER Using an interval timer is the best way to get the most out of your fitness time. Whether training for a sport or working toward specific fitness goals, interval training is a proven method to help you achieve your goals. TIMER SCREEN IS BEAUTIFUL & INTUITIVE Timer visualization displays the entire timeline of your workout with color-coded interval bars that transition from right to left as you exercise. Timer screen works seamlessly in portrait and landscape. CREATING TIMERS IS EASY AND FUN Intuitive gesture controls empower you to make and share timers in mere seconds, not fumbling through multiple screens. Swipe up and down to change duration. Tap and swipe up and down to increase or decrease intensity. You can name each interval to match your exercise. Apple Watch® Support • Timers are automatically synced from your phone to your watch any time you create, edit, re-order or delete timers from your iPhone® • Watch settings are just a swipe away. Swipe right from any open timer to access settings. • Integration with Health and Activity (see "Sync with Health" from settings on the watch app) • Full interval alert options with haptics & sound options including: Melodic, Arcade, US English (female) & US English (male) SHARE TIMERS WITH FRIENDS Pacer supports deep linking and timer sharing. Open a timer and tap share to send to a friend via AirDrop®, your favorite messaging app or share with your followers on social media. Recipients with Pacer will be able to open and save your timers to their devices. AUTOSTART Pacer knows when you are holding your phone and when you set it down. With Autostart enabled, once you open a timer just set it down to start it. Pick it up again to pause. Visit Settings in the app to enable Autostart. SEAMLESS MUSIC INTEGRATION Play music from your favorite music app with no interruptions. Pacer will play audio cues over your music and you can even adjust the volume independent of your music volume. No matter what music you’re listening to, the audio cues won’t be too loud or too quiet. FEATURED WORKOUTS HELP YOU GET STARTED If you’re new to interval training, check out our featured workouts. Pacer can be used for many different fitness disciplines, so take a peek at what the pros are doing. SWIPE TO DELETE - On Timers screen, swipe left on any timer to expose share, edit and delete REORDER TIMERS - Long press a timer and then drag-and-drop to customize timer position Pacer is created and maintained with the help of a NASM™ certified personal trainer.
Screenshots
Verdict
The clearest difference is price: Pacer Fitness at Free against Seconds Pro Interval Timer's $7.99. Pacer Fitness also leads on iOS requirement (12.0 vs 18.0). Seconds Pro Interval Timer's advantage is in-app purchases (none vs 1) and ratings volume (12K vs 306). On rating, update cadence, 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
Pacer Fitness is free to download; Seconds Pro Interval Timer costs $7.99 up front. Pacer Fitness sells 1 one-off in-app purchase. Seconds Pro Interval Timer asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.8 for Seconds Pro Interval Timer against 4.7 for Pacer Fitness. That said, the two scores are not equally well evidenced: Seconds Pro Interval Timer has 12K ratings behind it against 306, so its average is the more settled of the two. Written reviews are what separate them: 80% of Seconds Pro Interval Timer's written reviews are positive against 60% of Pacer Fitness's.
Seconds Pro Interval Timer ships an update fortnightly, Pacer Fitness every 9 days. The most recent releases landed on September 29, 2026 and September 26, 2026 respectively.
| Parameter | Seconds Pro Interval Timer | Pacer Fitness |
|---|---|---|
| Price | $7.99 | Free — better |
| Rating | 4.8 (12K ratings) — better | 4.7 (306 ratings) |
| Positive reviews | 79.9% of reviews — better | 60.0% of reviews |
| Number of ratings | 12K — better | 306 |
| Update frequency | Fortnightly | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Best chart rank | #8 — better | — |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 18.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 94 MB | 132 MB |
| Age rating | 4+ | 4+ |
| Developer | Runloop Ltd | Bright Mediums |
Customer experience
Seconds Pro Interval Timer
Pacer Fitness
User reviews
Seconds Pro Interval Timer
From 12K App Store ratingsWhat 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
Pacer Fitness
From 306 App Store ratingsWhat we love
- 👍 Intuitive and easy-to-use interface
- 🎨 Beautiful, clean, and visually appealing design
- ⚙️ Highly customizable timer configurations
- 🔊 Satisfying and audible sound notifications
- 💾 Ability to save and reuse custom timers
Room to improve
- 💰 Misleading free-to-premium pricing model
- 🔐 Privacy concerns with Apple Health data syncing
- 🐛 App crashes when screen is locked
- 🐛 App stops when switching to other apps
- 📢 Excessive and intrusive advertisements
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 moreShow fewer
- Calendar integration to track workouts
Pacer Fitness
Reported bugs
10 issues- Intervals beyond the 8th one don't execute
- Example workout has broken intervals
- Apple Health sync toggle resets automatically
- Timer stops when phone screen is locked
- Timer stops when switching between apps
Show 5 moreShow fewer
- App crashes during workout execution
- Sound doesn't play over background music
- App demands rating and stops timer without warning
- Frequent crashing on startup (older versions)
- Unable to purchase ad-free version
Requested features
10 requests- Auto-play functionality for continuous workouts
- Apple Watch app support
- GPS tracking for running workouts
- Adjustable countdown time (longer than 3 seconds)
- Ability to combine multiple timers in one workout
Show 5 moreShow fewer
- Daily workout history instead of combined totals
- Music control integration within the app
- More pre-built workout templates (battle ropes, etc.)
- Longer maximum timer duration (beyond 10 minutes)
- Ability to run app with screen locked and other apps open
In-app purchases
Seconds Pro Interval Timer
No in-app purchases
Pacer Fitness
- Unlock Pacer Plus$4.99
Questions
Is Seconds Pro Interval Timer free?
Is Pacer Fitness free?
Which has better reviews, Seconds Pro Interval Timer or Pacer Fitness?
Do Seconds Pro Interval Timer or Pacer Fitness have ads?
Which is updated more often, Seconds Pro Interval Timer or Pacer Fitness?
Other comparisons















