Comparison

Seconds Interval Timer vs Round Timer

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

Round Timer

This app provides a simple and customizable timer for interval training like HIIT, Tabata, and EMOM. It offers audio cues, background operation, and integrates with Apple Watch for health tracking. Pre-built routines and workout reminders help users stay consistent with their fitness goals.

Highlights
  • Customizable interval timer
  • Audio alerts for rounds
  • Background operation
  • Apple Watch integration
  • Workout reminders
  • Pre-built routines
Features
Read full description

A simple and beautiful timer for your HIIT, Tabata and EMOM workouts. Features: • Listen to your music while using the app • Plays sounds to alert for the beginning of a new round • Easy to change timer settings • Default setup is an 8-round Tabata workout • Works in background • Supports landscape mode • The Apple Watch app Integrates with the Health app to track your heart rate and energy used • Workout reminders to help you stay consistent • Pre-built routines for quick workout setup • Free app Start using IMMEDIATELY without tedious setup found in other apps. The intervals are simple to change to suit any kind of training you want. Distinct colors represent exercise phases for easy recognition. High intensity interval training (HIIT) has several benefits over traditional cardio programs including: • burns a large number of calories in a short period of time • increases your metabolic rate even after you've finished exercising • helps you lose weight with the least amount of time spent in the gym Download the app now and give it a try! Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Seconds Interval Timer4 screens
Round Timer4 screens

Verdict

The call

The clearest difference is ads: Seconds Interval Timer at none against Round Timer's shown. Seconds Interval Timer also leads on ratings volume (24K vs 296). Round Timer's advantage is iOS requirement (15.0 vs 18.0). 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 and Round Timer sells 8 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for Seconds Interval Timer against 4.8 for Round Timer. That said, the two scores are not equally well evidenced: Seconds Interval Timer has 24K ratings behind it against 296, 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 73% of Round Timer's.

UpkeepUpdate frequency

Seconds Interval Timer ships an update monthly, Round Timer every 3 weeks. The most recent releases landed on September 25, 2026 and September 12, 2026 respectively.

Scorecard3 real differences · 7 level
Seconds Interval Timer versus Round Timer: the parameters behind the verdict, then further details
ParameterSeconds Interval TimerRound Timer
PriceFreeFree
Rating4.7 (24K ratings)4.8 (296 ratings) — better
Positive reviews75.0% of reviews — better73.3% of reviews
Number of ratings24K — better296
Update frequencyMonthlyEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod, Apple Watch — better
Requires iOS18.015.0 — better
Further details — not scored
Size95 MB39 MB
Age rating4+4+
DeveloperRunloop LtdMiklos Pavel

Customer experience

Seconds Interval Timer

All ratings23,662 ratings
Positive93.0%
Neutral1.9%
Negative5.2%
Written reviews1,237 reviews
Positive75.0%
Neutral6.1%
Negative18.8%

Round Timer

All ratings296 ratings
Positive95.9%
Neutral1.7%
Negative2.4%
Written reviews15 reviews
Positive73.3%
Neutral6.7%
Negative20.0%

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

Round Timer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Seconds Interval Timer

One-time1
  • Advanced Version$7.99
8 purchases

Round Timer

Subscriptions2
  • Monthly$3.991 Month
  • Yearly7 Days trial$19.991 Year
One-time6
  • Premium featuresFree
  • Remove Ads$1.99
  • Custom sounds$1.99
Show 3 more
  • Premium features$4.99
  • Premium features$9.99
  • Premium features$14.99

Questions

Is Seconds Interval Timer free?
Seconds Interval Timer is free to download, with in-app purchases available.
Is Round Timer free?
Round Timer is free to download, with in-app purchases available.
Which has better reviews, Seconds Interval Timer or Round Timer?
Round Timer is rated higher. Seconds Interval Timer averages 4.7 out of 5 from 24K ratings, while Round Timer averages 4.8 from 296 ratings.
Do Seconds Interval Timer or Round Timer have ads?
Round Timer shows ads; Seconds Interval Timer does not.
Which is updated more often, Seconds Interval Timer or Round Timer?
Seconds Interval Timer ships an update monthly, and Round Timer every 3 weeks. Most recently, Seconds Interval Timer was updated on September 25, 2026 and Round Timer on September 12, 2026.

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