Comparison

Seconds Pro Interval Timer vs On the Beat

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

On the Beat

Create music-driven indoor cycling classes with a beat-synced timer. Design rides from your music library, customize choreography, and teach with confidence using a clear, live display. Export class plans for studio use.

Highlights
  • Build classes from music playlists
  • Program choreography to song beats
  • Live, glanceable class timer
  • Full song playback via Apple Music/Spotify
  • Customize drills and ride structure
  • Export one-page class sheets
Features
Read full description

Turn the best cycling songs into ready-to-teach rides. Built for indoor cycling instructors, On the Beat helps you create classes where every climb, sprint, and recovery lands on the beat. Build a ride from your music, customize the choreography, and teach from a live timer designed for the studio. WHAT YOU CAN DO • Build a class in minutes. Start with a theme, playlist, or vibe and generate a complete ride. • Program to the music. Climbs hit the build, sprints hit the drop, and every effort matches the energy of the song. • Teach with confidence. Follow a clean, glanceable timer showing the current move, what's next, and where you are in the ride. • Play full songs through Apple Music, synced to your class timer and playing even when your screen is locked. Spotify is supported too (tracks open in the Spotify app). • Make every class your own. Adjust drills, timing, intensity, and ride structure to fit your coaching style. • Export and share. Print or save a clean one-page class sheet for the studio. Spend less time searching for songs and building playlists. Spend more time coaching unforgettable rides. APPLE MUSIC Full-song playback in class uses your own Apple Music subscription, connected directly through Apple. On the Beat never sees or stores your Apple ID password. You can also save any class as a playlist in your Apple Music library. Using Spotify? On the Beat builds the class and runs the timer and the cues. You start the songs in Spotify yourself. You do not need any music subscription to build classes, browse the catalogue, or teach with the timer and cues. WHAT YOU GET FREE Build up to 5 classes Browse the full mapped song catalogue Teach with the live timer and cues Request up to 10 songs for the catalogue 3 song changes per class ON THE BEAT PREMIUM Unlimited classes Unlimited song changes and AI revise Unlimited song requests PDF class sheets to print or save Share a class with another instructor in one tap Weekly mixes built around what you teach SUBSCRIPTION DETAILS On the Beat Premium is an auto-renewing subscription. Monthly is $12.99 per month. Annual is $119.99 per year. Payment is charged to your Apple Account at purchase. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage or cancel anytime in Settings on your iPhone, under your Apple Account, then Subscriptions. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://onthebeatapp.com/privacy

Screenshots

Seconds Pro Interval Timer4 screens
On the Beat4 screens

Verdict

The call

The clearest difference is price: On the Beat at Free against Seconds Pro Interval Timer's $7.99. On the Beat also leads on review sentiment (100% vs 79%) and rating (5.0 vs 4.8). Seconds Pro Interval Timer's advantage is ratings volume (12K vs 6) and chart position (#8 vs unranked). On update cadence, ads, in-app purchases and device support 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

On the Beat 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 Beat holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Seconds Pro Interval Timer has 12K ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 79% of Seconds Pro Interval Timer's written reviews are positive against 100% of On the Beat's.

UpkeepUpdate frequency

Seconds Pro Interval Timer ships an update fortnightly, On the Beat monthly. The most recent releases landed on November 1, 2026 and October 24, 2026 respectively.

Scorecard7 real differences · 4 level
Seconds Pro Interval Timer versus On the Beat: the parameters behind the verdict, then further details
ParameterSeconds Pro Interval TimerOn the Beat
Price$7.99Free — better
Rating4.8 (12K ratings)5.0 (6 ratings) — better
Positive reviews79.5% of reviews100.0% of reviews — better
Number of ratings12K — better6
Update frequencyFortnightly — betterMonthly
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
Best chart rank#8 — better—
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS18.015.0 — better
Further details — not scored
Size98 MB12 MB
Age rating4+4+
DeveloperRunloop LtdInstruct

Customer experience

Seconds Pro Interval Timer

All ratings12,151 ratings
Positive94.6%
Neutral1.9%
Negative3.5%
Written reviews1,544 reviews
Positive79.5%
Neutral6.0%
Negative14.5%

On the Beat

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

On the Beat

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Seconds Pro Interval Timer

No in-app purchases

None

On the Beat

No in-app purchases

Questions

Is Seconds Pro Interval Timer free?
Seconds Pro Interval Timer costs $7.99, with no in-app purchases.
Is On the Beat free?
On the Beat is free to download, with no in-app purchases.
Which has better reviews, Seconds Pro Interval Timer or On the Beat?
On the Beat is rated higher. Seconds Pro Interval Timer averages 4.8 out of 5 from 12K ratings, while On the Beat averages 5.0 from 6 ratings.
Do Seconds Pro Interval Timer or On the Beat have ads?
Neither Seconds Pro Interval Timer nor On the Beat shows ads.
Which is updated more often, Seconds Pro Interval Timer or On the Beat?
Seconds Pro Interval Timer ships an update fortnightly, and On the Beat monthly. Most recently, Seconds Pro Interval Timer was updated on November 1, 2026 and On the Beat on October 24, 2026.

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