Comparison

Seconds Interval Timer vs GymTimer

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

GymTimer

Create and follow custom interval workouts for HIIT, Tabata, and circuits. Track progress, set goals, and earn rewards. Personalize your timer and sync data across devices with an optional subscription.

Highlights
  • Customizable work/rest intervals
  • Full-screen clear timer display
  • Workout history and progress tracking
  • Daily workout goals and streaks
  • Workout favorites and reminders
  • Cloud sync with Crystal ID
Features
Read full description

Build interval workouts that keep every work period, rest, exercise, and round on track. GymTimer gives you a clear, focused timer for HIIT, circuits, strength training, boxing, running, and home workouts. BUILD YOUR WORKOUT Set work and rest times, choose exercises and rounds, and add recovery time between rounds. Save favorite setups so your next session is ready in seconds. CREATE A ROUTINE Schedule favorite workouts for the days and times that suit you. Smart reminders help you stay consistent. SEE YOUR PROGRESS Review workout history, active days, streaks, trophies, and awards. Set a daily activity goal and see how each session moves you forward. MAKE IT YOURS Choose themes, timer styles, sounds, week settings, and avatars. Optional cloud sync keeps supported data available across your devices. Some features require a Pro subscription. Terms of Use: https://crystalinteractiveentertainment.com/terms Privacy Policy: https://crystalinteractiveentertainment.com/privacy

Screenshots

Seconds Interval Timer4 screens
GymTimer4 screens

Verdict

The call

The clearest difference is ads: Seconds Interval Timer at none against GymTimer's shown. Seconds Interval Timer also leads on ratings volume (24K vs 2) and device support (3 vs 1). GymTimer's advantage is update cadence (every 4 days vs monthly) and review sentiment (100% vs 75%). On price, in-app purchases, monetization model and iOS requirement 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 GymTimer sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

GymTimer holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Seconds Interval Timer has 24K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 75% of Seconds Interval Timer's written reviews are positive against 100% of GymTimer's.

UpkeepUpdate frequency

Seconds Interval Timer ships an update monthly, GymTimer every 4 days. The most recent releases landed on October 3, 2026 and September 22, 2026 respectively.

Scorecard6 real differences · 4 level
Seconds Interval Timer versus GymTimer: the parameters behind the verdict, then further details
ParameterSeconds Interval TimerGymTimer
PriceFreeFree
Rating4.7 (24K ratings)5.0 (2 ratings) — better
Positive reviews74.9% of reviews100.0% of reviews — better
Number of ratings24K — better2
Update frequencyMonthlyEvery 4 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS18.017.0 — better
Further details — not scored
Size95 MB69 MB
Age rating4+12+
DeveloperRunloop LtdCrystal Interactive Entertainment LLC

Customer experience

Seconds Interval Timer

All ratings23,673 ratings
Positive93.0%
Neutral1.9%
Negative5.2%
Written reviews1,245 reviews
Positive74.9%
Neutral6.2%
Negative18.9%

GymTimer

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

GymTimer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Seconds Interval Timer

One-time1
  • Advanced Version$7.99
2 purchases

GymTimer

Subscriptions2
  • Monthly$1.991 Month
  • Yearly$4.991 Year

Questions

Is Seconds Interval Timer free?
Seconds Interval Timer is free to download, with in-app purchases available.
Is GymTimer free?
GymTimer is free to download, with in-app purchases available.
Which has better reviews, Seconds Interval Timer or GymTimer?
GymTimer is rated higher. Seconds Interval Timer averages 4.7 out of 5 from 24K ratings, while GymTimer averages 5.0 from 2 ratings.
Do Seconds Interval Timer or GymTimer have ads?
GymTimer shows ads; Seconds Interval Timer does not.
Which is updated more often, Seconds Interval Timer or GymTimer?
Seconds Interval Timer ships an update monthly, and GymTimer every 4 days. Most recently, Seconds Interval Timer was updated on October 3, 2026 and GymTimer on September 22, 2026.

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