Comparison

Seconds Interval Timer vs Spark Kiosk

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

Spark Kiosk

This app transforms an iPad into a dedicated attendance management system. It allows students to quickly check in and view important announcements. Instructors can manage rosters, attendance, and student information securely.

Highlights
  • Student check-in
  • Event announcements
  • Light/Dark mode
  • Instructor Mode for management
  • Roster and attendance tracking
  • Guardian notifications
  • Student profile picture uploads
Features
Read full description

Elevate your attendance management with the Spark Kiosk app, turning your iPad into a standalone attendance solution. Students breeze through check-ins in seconds, while staying informed with the latest events and announcements displayed between check-ins. Experience Personalized Viewing with Light/Dark Mode Enjoy a sleek, user-friendly interface with Light and Dark modes, offering a personalized experience tailored to any lighting scenario. Effortless Instructor Mode for Management Control Introducing Instructor Mode! Perform all management tasks directly from your kiosk. Activate it securely with a PIN code, granting exclusive access to essential management features. Efficiency at Your Fingertips: Roster and Attendance Management From effortless scheduling in Instructor Mode to comprehensive roster management, handle additions, deletions, and updates seamlessly. Review class attendance at a glance or drill down to individual student records effortlessly. Guardian Notifications for Check-In/Check-Out Ensure safety and peace of mind with our Check-In/Check-Out feature. Keep guardians informed about pick-ups, offering reassurance and timely notifications. Personalize Student Profiles with Picture Uploads Empower students to add a touch of identity by uploading their pictures, creating a personalized experience within the app. -------------------------------------- If you have any feedback or questions, please go to Spark Kiosk > Settings > Feedback

Screenshots

Seconds Interval Timer4 screens

Verdict

The call

The clearest difference is in-app purchases: Spark Kiosk at none against Seconds Interval Timer's 1. Spark Kiosk also leads on iOS requirement (15.0 vs 18.0). Seconds Interval Timer's advantage is ratings volume (24K vs 34) and device support (3 vs 1). On price, rating, review sentiment 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

Both are free to download. Seconds Interval Timer sells 1 one-off in-app purchase. Spark Kiosk asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for Seconds Interval Timer against 4.7 for Spark Kiosk. That said, the two scores are not equally well evidenced: Seconds Interval Timer has 24K ratings behind it against 34, so its average is the more settled of the two. Written reviews are what separate them: 75% of Seconds Interval Timer's written reviews are positive against 67% of Spark Kiosk's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly monthly. Both last shipped on October 24, 2026.

Scorecard5 real differences · 5 level
Seconds Interval Timer versus Spark Kiosk: the parameters behind the verdict, then further details
ParameterSeconds Interval TimerSpark Kiosk
PriceFreeFree
Rating4.7 (24K ratings)4.7 (34 ratings) — better
Positive reviews74.5% of reviews — better66.7% of reviews
Number of ratings24K — better34
Update frequencyMonthlyMonthly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, Apple Watch — betteriPad
Requires iOS18.015.0 — better
Further details — not scored
Size99 MB74 MB
Age rating4+9+
DeveloperRunloop LtdSpark Membership LLC

Customer experience

Seconds Interval Timer

All ratings23,761 ratings
Positive93.0%
Neutral1.9%
Negative5.2%
Written reviews1,287 reviews
Positive74.5%
Neutral6.4%
Negative19.1%

Spark Kiosk

All ratings34 ratings
Positive94.1%
Neutral0.0%
Negative5.9%
Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

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

Spark Kiosk

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Seconds Interval Timer

One-time1
  • Advanced Version$7.99
None

Spark Kiosk

No in-app purchases

Questions

Is Seconds Interval Timer free?
Seconds Interval Timer is free to download, with in-app purchases available.
Is Spark Kiosk free?
Spark Kiosk is free to download, with no in-app purchases.
Which has better reviews, Seconds Interval Timer or Spark Kiosk?
Spark Kiosk is rated higher. Seconds Interval Timer averages 4.7 out of 5 from 24K ratings, while Spark Kiosk averages 4.7 from 34 ratings.
Do Seconds Interval Timer or Spark Kiosk have ads?
Neither Seconds Interval Timer nor Spark Kiosk shows ads.
Which is updated more often, Seconds Interval Timer or Spark Kiosk?
Seconds Interval Timer ships an update monthly, and Spark Kiosk monthly. Most recently, Seconds Interval Timer was updated on October 24, 2026 and Spark Kiosk on October 24, 2026.

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