Seconds Pro Interval Timer vs Sezzy Timer
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
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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.
Sezzy Timer
This app provides pre-formatted workout timers for various fitness routines, including HIIT and Pilates. It offers visual and auditory cues to guide users through exercises and rest periods, allowing for efficient and motivating workouts. Users can also create custom timers and listen to music simultaneously.
- Eleven unique pre-formatted timers
- Custom timer creation
- Visual and auditory cues
- Background operation with music
- Pause and play functionality
- Next exercise display
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The perfect pre-formatted timer app that allows you to get straight into your workout with the click of a button! Whether you're smashing out a HIIT workout, pilates or your own custom circuit, the Sezzy Timer has ELEVEN unique timers to use so your workouts are always efficient, fun and on track! Each timer uses visual and auditory cues to ensure you know what exercise you're up to! You can also listen to your tunes simultaneously as the timer to stay in the zone and maintain motivation. Timers to chose from: 1. Sweaty Shredder 2. Toning Power 3. 10 Minute Blaster 4. 15 Minute Burner 5. AMRAP 6. Custom Timer 7. 30 Min Pilates 8. HIIT Pilates 9. 45/15 Sweat 10. 10 Min Movement 11. Express Cardio All Timers Include: - Visual cues including rest, sets, circuit, exercises, supersets or rounds (depending what kind of workout you’re doing) - Auditory cues allowing you to step away from your phone and complete the workout purely through listening. Sezzy Timer specifies what round, exercise, set or rest period you’re up to. It will also help count you down until your next movement - Works in the background of your phone allowing you to listen to music and smash through your workout, while hearing cues from the timer app - Custom option to create your own personalised workout - Pause, and play option - Display of what is coming up next in your workout to better prepare your body. The Sezzy Timer app is simple, quick and easy to use and requires little to no preparation. Setting up timers and organising rounds, exercises and sets can often be confusing and tricky, so I’m here to take the stress out of your workout. Follow my cues and you’re on your way to a successful, sweaty, soul fulfilling workout!
Screenshots
Verdict
The clearest difference is rating: Seconds Pro Interval Timer at 4.8 against Sezzy Timer's 3.9. Seconds Pro Interval Timer also leads on review sentiment (80% vs 50%) and ratings volume (12K vs 100). Sezzy Timer's advantage is price ($1.99 vs $7.99) and iOS requirement (12.0 vs 18.0). On ads, in-app purchases 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
Seconds Pro Interval Timer costs $7.99 and Sezzy Timer $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Seconds Pro Interval Timer holds the better App Store score, 4.8 against 3.9. That said, the two scores are not equally well evidenced: Seconds Pro Interval Timer has 12K ratings behind it against 100, so its average is the more settled of the two. Written reviews point the same way: 80% of Seconds Pro Interval Timer's written reviews are positive against 50% of Sezzy Timer's.
Seconds Pro Interval Timer ships an update fortnightly, Sezzy Timer every 3 months. The most recent releases landed on September 26, 2026 and September 23, 2026 respectively.
| Parameter | Seconds Pro Interval Timer | Sezzy Timer |
|---|---|---|
| Price | $7.99 | $1.99 — better |
| Rating | 4.8 (12K ratings) — better | 3.9 (100 ratings) |
| Positive reviews | 79.9% of reviews — better | 50.0% of reviews |
| Number of ratings | 12K — better | 100 |
| Update frequency | Fortnightly — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Best chart rank | #8 — better | #59 |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPod |
| Requires iOS | 18.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 94 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Runloop Ltd | Sarah's Day Pty Limited |
Customer experience
Seconds Pro Interval Timer
Sezzy Timer
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
Sezzy Timer
From 100 App Store ratingsWhat we love
- 👍 Simple and intuitive user interface
- 🎵 Works seamlessly with background music (Spotify, Apple Music)
- 🎤 Sarah's voice guidance is motivating and helpful
- 💪 Perfect companion for Sarah's ebook workouts
- ⏱️ Eliminates need to manually set up interval timers
Room to improve
- 🐛 Timer frequently crashes or stops mid-workout
- 🐛 Timer pauses when switching between apps
- ⏰ Timer accuracy issues (runs slow or fast)
- ❌ No back button to return to main menu
- ❌ Cannot skip ahead if timer accidentally exits
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
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- Calendar integration to track workouts
Sezzy Timer
Reported bugs
14 issues- Timer stops or crashes mid-workout
- Timer pauses when switching to other apps
- Timer accuracy issues (runs faster or slower than expected)
- App crashes when phone screen locks
- Timer resets if accidentally navigate away
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- Sarah's voice cuts off mid-announcement
- Sarah's voice too quiet to hear over music
- Screen doesn't rotate to landscape mode
- Custom timer setup is confusing and unclear
- Timer skips breaks or jumps between sections
- App freezes or becomes unresponsive
- Music stops playing when app opens
- Countdown timer numbers partially hidden
- Next exercise/round indicators reversed at bottom of screen
Requested features
13 requests- Apple Watch app support
- Add 20-second rest period option
- Save custom timer settings for reuse
- Skip/fast-forward button to jump between sets
- Back button to return to main menu
Show 8 moreShow fewer
- Display exercise names instead of just numbers
- Summary screen showing total workout time and circuits completed
- Progress tracking and calendar logging
- More rest/workout time increment options
- Ability to skip rounds if timer glitches
- Better custom timer UI with clearer instructions
- Music volume ducking when Sarah speaks
- Workout total time display for custom timers
In-app purchases
Seconds Pro Interval Timer
No in-app purchases
Sezzy Timer
No in-app purchases
Questions
Is Seconds Pro Interval Timer free?
Is Sezzy Timer free?
Which has better reviews, Seconds Pro Interval Timer or Sezzy Timer?
Do Seconds Pro Interval Timer or Sezzy Timer have ads?
Which is updated more often, Seconds Pro Interval Timer or Sezzy Timer?
Which is more popular, Seconds Pro Interval Timer or Sezzy Timer?
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