Comparison

Seconds Interval Timer vs BoxClock

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

Head to head
About

Seconds Interval Timer

This app provides a versatile interval timer for various workout types like Tabata, HIIT, and circuit training. It features a clear, full-screen display, customizable alerts, and background operation. Users can also utilize a stopwatch and countdown timer, with integration for Apple Health.

Highlights
  • Full-screen colored display
  • Templates for HIIT, Tabata, Circuit Training
  • Voice and audio alerts
  • Music assignment per interval
  • Background operation
  • Apple Health integration
  • Stopwatch and countdown timer
Features
Read full description

Seconds 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 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 reads your body measurements and year of birth from Health to estimate calories burned. FREE TO TRY, ONE PAYMENT TO UNLOCK - Everything is available from the first launch. Build any timer and run it. - Each timer locks after you run it once. A single in-app purchase removes the lock on every timer you make. SECONDS AND SECONDS PRO - Seconds Pro is the same app, paid once up front, with nothing to unlock. 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

BoxClock

This app provides a customizable gym clock with various timer modes like EMOM, AMRAP, and Tabata. It features a clear, large display designed for visibility across a room and offers audio cues for transitions. Save your favorite workout configurations for quick access.

Highlights
  • Multiple timer modes (EMOM, AMRAP, Tabata, Custom)
  • Large, clear LED-style display
  • Customizable audio cues
  • Lock Screen and Dynamic Island integration
  • Save up to 10 workout configurations
  • No ads or subscriptions
Features
Read full description

EMOM, AMRAP, Tabata, Custom Intervals. The gym clock on your wall, but on your phone. No ads. No recipes. No workout videos. No social feed. No account to create. No subscription to forget about. Just a gym clock that does one thing extremely well. Designed to look and feel like the LED timers mounted on gym walls, BoxClock turns your iPhone or iPad into the clock you already know how to use. Glance up, read the time, get back to work. 7 TIMER MODES - EMOM (Every Minute on the Minute) — Set your rounds and interval length. Audio beeps at every minute. - AMRAP (As Many Rounds as Possible) — Countdown timer with a swipe-up round counter. - Tabata — Classic 20/10 or fully configurable work/rest intervals. Red for work, amber for rest. - Custom Intervals — Configure sets, rounds, work time, rest time, and rest between sets. Your workout, your rules. - Countdown — Set a duration and go. Big LED digits count down to zero. - Stopwatch — Count up from zero. Simple and reliable. - Clock — Real-time display in 12h or 24h format. Mount your phone on the wall. LIVE ACTIVITIES ON THE LOCK SCREEN - See your timer ticking on the Lock Screen and Dynamic Island - Round count, phase (WORK / REST), and big digits — no need to unlock - Pre-countdown "GET READY" view so you never miss the start - Pause directly from the Lock Screen and resume without opening the app LOOKS LIKE A REAL GYM CLOCK - 7-segment LED digits with visible unlit segment traces - Green digits for rounds, red for time, amber for rest - Black background, high contrast, readable from across the room - Landscape display fills your screen edge to edge AUDIO CUES - 3-2-1 beeps before every workout starts - Beeps at work/rest transitions and round changes - Alert when the workout is done - Mixes with Spotify, Apple Podcasts, and your own music — no pausing your playlist - Keeps playing with the phone face-down, in background, or with the screen locked - Plays even when your phone is on silent SAVE YOUR WORKOUTS - Bookmark up to 10 timer configurations - Tap a saved workout and go — no re-entering settings - Each mode remembers its own settings between sessions CONFIGURABLE START COUNTDOWN - Set your pre-workout countdown anywhere from 0 to 60 seconds - Set it to 0 to skip the countdown entirely and start instantly JUST A CLOCK - Screen stays on during active timers - No dimming, no interruptions - Works on iPhone and iPad - No account. No ads. No tracking. No bloat. PRICING Clock, Stopwatch, and Countdown are free forever. Unlock EMOM, AMRAP, Tabata, Custom Intervals, saved workouts, and the configurable countdown for $4.99. One time. No subscription. No "premium tier". Pay once, train forever. BoxClock is made by Tiny Delights. One app. One job. Done well.

Screenshots

Seconds Interval Timer4 screens
BoxClock4 screens

Verdict

The call

The clearest difference is rating: Seconds Interval Timer at 4.7 against BoxClock's 4.0. Seconds Interval Timer also leads on ratings volume (24K vs 1). On price, update cadence, ads and in-app purchases 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

Both are free to download. Seconds Interval Timer sells 1 one-off in-app purchase and BoxClock sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Seconds Interval Timer holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Seconds Interval Timer has 24K ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Seconds Interval Timer ships an update monthly, BoxClock every 2 weeks. The most recent releases landed on October 20, 2026 and October 1, 2026 respectively.

Scorecard2 real differences · 8 level
Seconds Interval Timer versus BoxClock: the parameters behind the verdict, then further details
ParameterSeconds Interval TimerBoxClock
PriceFreeFree
Rating4.7 (24K ratings) — better4.0 (1 ratings)
Positive reviews74.5% of reviews—
Number of ratings24K — better1
Update frequencyMonthlyEvery 2 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS18.017.0 — better
Further details — not scored
Size95 MB2 MB
Age rating4+4+
DeveloperRunloop LtdCarlos Manuel Gomes Vilhena

Bugs and requests

Seconds Interval Timer

Reported bugs

2 issues
  • Timer sometimes stops working unexpectedly
  • Issues with restoring purchases on new devices

Requested features

5 requests
  • Ability to change beep/alert volume independently
  • Option to delay transition between intervals
  • Sync workouts across devices
  • More preset workout templates
  • Heart rate monitoring integration

BoxClock

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Seconds Interval Timer

One-time1
  • Advanced Version$7.99
1 purchases

BoxClock

One-time1
  • BoxClock Premium$4.99

Questions

Is Seconds Interval Timer free?
Seconds Interval Timer is free to download, with in-app purchases available.
Is BoxClock free?
BoxClock is free to download, with in-app purchases available.
Which has better reviews, Seconds Interval Timer or BoxClock?
Seconds Interval Timer is rated higher. Seconds Interval Timer averages 4.7 out of 5 from 24K ratings, while BoxClock averages 4.0 from 1 ratings.
Do Seconds Interval Timer or BoxClock have ads?
Neither Seconds Interval Timer nor BoxClock shows ads.
Which is updated more often, Seconds Interval Timer or BoxClock?
Seconds Interval Timer ships an update monthly, and BoxClock every 2 weeks. Most recently, Seconds Interval Timer was updated on October 20, 2026 and BoxClock on October 1, 2026.

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