Comparison

Seconds Pro Interval Timer vs ZIN Play

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

ZIN Play

Access your music library and get personalized song suggestions. Customize tracks with sound effects and trimming. Enjoy offline access to playlists and exclusive content.

Highlights
  • Access music library
  • Song suggestions
  • Track customization
  • Offline playlist access
  • Exclusive content access
  • Search by keyword, rhythm, BPM
Features
Read full description

With ZIN™ Play, you can access your music from ZIN™ Now and your music library directly from your phone, get song suggestions based on your playlists, and search for tracks by keyword, rhythm and BPM. You're able to customize your favorite tracks by adding sound effects and trimming the length – you can even add a water break! Even if you haven't made the switch to digital yet, you'll get content like Mega Mix choreo, plus specialty and bonus videos. Your favorite content from ZIN™ Now automatically syncs with ZIN™ Play without missing a beat. The best part? You can access your playlists in class without needing Wi-Fi or mobile data.

Screenshots

Seconds Pro Interval Timer4 screens
ZIN Play4 screens

Verdict

The call

The clearest difference is price: ZIN Play at Free against Seconds Pro Interval Timer's $7.99. ZIN Play also leads on iOS requirement (15.0 vs 18.0). Seconds Pro Interval Timer's advantage is review sentiment (80% vs 53%) and chart position (#11 vs unranked). On rating, ratings volume, update cadence and ads 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

ZIN Play is free to download; Seconds Pro Interval Timer costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

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 4.7 for ZIN Play. Both are backed by a comparable volume of ratings — 12K and 6.7K respectively. Written reviews are what separate them: 80% of Seconds Pro Interval Timer's written reviews are positive against 53% of ZIN Play's.

UpkeepUpdate frequency

Seconds Pro Interval Timer ships an update fortnightly, ZIN Play every 2 weeks. The most recent releases landed on September 24, 2026 and September 23, 2026 respectively.

Scorecard5 real differences · 6 level
Seconds Pro Interval Timer versus ZIN Play: the parameters behind the verdict, then further details
ParameterSeconds Pro Interval TimerZIN Play
Price$7.99Free — better
Rating4.8 (12K ratings) — better4.7 (6.7K ratings)
Positive reviews79.9% of reviews — better53.3% of reviews
Number of ratings12K — better6.7K
Update frequencyFortnightlyEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
Best chart rank#11 — better
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS18.015.0 — better
Further details — not scored
Size94 MB101 MB
Age rating4+4+
DeveloperRunloop LtdZumba® Fitness

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%

ZIN Play

All ratings6,711 ratings
Positive94.7%
Neutral3.7%
Negative1.6%
Written reviews261 reviews
Positive53.3%
Neutral16.1%
Negative30.7%

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

ZIN Play

From 6.7K App Store ratings

What we love

  • 👍 Easy to access content
  • 🚀 Continuous music playback
  • 💡 Ability to customize playlists
  • 👍 Helpful for class preparation

Room to improve

  • 🐛 App crashes or freezes
  • 🐛 Unreliable song playback
  • 🐛 Inconsistent volume levels
  • 🐛 Logging out issues

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

ZIN Play

Reported bugs

4 issues
  • Songs not playing from playlists
  • App not recognizing Apple Watch controls
  • Incompatibility with certain iOS versions
  • Unexpected log-outs during classes

Requested features

4 requests
  • Integrate with other music services (e.g. Spotify)
  • Add option to change song playback speed
  • Improve offline functionality and song downloads
  • Enhance video viewing experience (e.g. change camera angles)

In-app purchases

None

Seconds Pro Interval Timer

No in-app purchases

None

ZIN Play

No in-app purchases

Questions

Is Seconds Pro Interval Timer free?
Seconds Pro Interval Timer costs $7.99, with no in-app purchases.
Is ZIN Play free?
ZIN Play is free to download, with no in-app purchases.
Which has better reviews, Seconds Pro Interval Timer or ZIN Play?
Seconds Pro Interval Timer is rated higher. Seconds Pro Interval Timer averages 4.8 out of 5 from 12K ratings, while ZIN Play averages 4.7 from 6.7K ratings.
Do Seconds Pro Interval Timer or ZIN Play have ads?
Neither Seconds Pro Interval Timer nor ZIN Play shows ads.
Which is updated more often, Seconds Pro Interval Timer or ZIN Play?
Seconds Pro Interval Timer ships an update fortnightly, and ZIN Play every 2 weeks. Most recently, Seconds Pro Interval Timer was updated on September 24, 2026 and ZIN Play on September 23, 2026.

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