Seconds Pro Interval Timer vs CoreFit Collective
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
CoreFit Collective
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CoreFit App is a powerful new platform built for the next generation of fitness professionals. Designed to support your growth on and off the floor, this all-in-one mobile and web app delivers science-based education, practical coaching tips, inspiring class designs, curated playlists, and an engaging instructor community for connection and collaboration. Accessible anytime, anywhere, CoreFit Collective empowers you to learn, create, and inspire—every step of the way. Our app offers auto-renewing subscriptions. You'll receive unlimited access to content on all your devices. Payment is charged to your account at confirmation of purchase. Pricing varies by location and is confirmed prior to purchase. Subscription automatically renews each month unless canceled at least 24 hours before the end of the current billing period, or the trial period (when offered). Cancel anytime in Account Settings. Terms of service: https://corehealthfitness.uscreen.io/pages/terms Privacy policy: https://corehealthfitness.uscreen.io/pages/privacy
Screenshots
Verdict
The clearest difference is price: CoreFit Collective at Free against Seconds Pro Interval Timer's $7.99. CoreFit Collective also leads on iOS requirement (15.0 vs 18.0). Seconds Pro Interval Timer's advantage is in-app purchases (none vs 2) and update cadence (fortnightly vs every 2 months). On ads 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
CoreFit Collective is free to download; Seconds Pro Interval Timer costs $7.99 up front. CoreFit Collective sells 2 in-app purchases, starting at $5.99 per month. Seconds Pro Interval Timer asks for nothing beyond the download.
Seconds Pro Interval Timer ships an update fortnightly, CoreFit Collective every 2 months. The most recent releases landed on September 30, 2026 and September 9, 2026 respectively.
| Parameter | Seconds Pro Interval Timer | CoreFit Collective |
|---|---|---|
| Price | $7.99 | Free — better |
| Rating | 4.8 (12K ratings) — better | — |
| Positive reviews | 79.9% of reviews | — |
| Number of ratings | 12K — better | — |
| Update frequency | Fortnightly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Best chart rank | #9 — better | — |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 18.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 94 MB | 65 MB |
| Age rating | 4+ | 4+ |
| Developer | Runloop Ltd | Core Health & Fitness LLC |
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
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- Calendar integration to track workouts
CoreFit Collective
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Seconds Pro Interval Timer
No in-app purchases
CoreFit Collective
- CoreFit Cycle Monthly (In-App)$5.991 Month
- CoreFit Cycle Yearly (In-App)$59.001 Year
Questions
Is Seconds Pro Interval Timer free?
Is CoreFit Collective free?
Do Seconds Pro Interval Timer or CoreFit Collective have ads?
Which is updated more often, Seconds Pro Interval Timer or CoreFit Collective?
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