Comparison

Seconds Pro Interval Timer vs Exerp Staff

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

Exerp Staff

Manage group exercise and personal training schedules, appointments, and member check-ins. Easily trade or pick up classes, and integrate seamlessly with the Exerp back-end for efficient management of schedules, bookings, and member data.

Highlights
  • Class and appointment tracking
  • Class trading and sign-ups
  • Member check-in functionality
  • Direct integration with Exerp back-end
  • Management of class schedules
  • Booking and member profile management
Features
Read full description

Exerp Staff App, a product of Xplor Technologies, is built for group exercise instructors and personal trainers. It helps fitness professionals manage schedules, classes, appointments, and member interactions from their mobile device, making it easier to stay organized on the go and focus more on their members. With Exerp Staff App, you can: Manage your schedule View upcoming classes, appointments, and personal training sessions. Manage bookings and attendance Add or remove participants and quickly register attendance, including via QR scan. Find class substitutes Mark classes as looking for a substitute or take over available classes from colleagues. View member information Search for members and access relevant information such as contact details, subscriptions, PT clips, and recent activity. Manage your availability Set your availability for appointments, including recurring schedules. Stay connected with Exerp The app integrates directly with the Exerp platform, keeping schedules, bookings, and member information up to date.

Screenshots

Seconds Pro Interval Timer4 screens
Exerp Staff4 screens

Verdict

The call

The clearest difference is review sentiment: Seconds Pro Interval Timer at 80% against Exerp Staff's 19%. Seconds Pro Interval Timer also leads on rating (4.8 vs 4.4) and ratings volume (12K vs 1.2K). Exerp Staff's advantage is price (Free vs $7.99) and iOS requirement (15.0 vs 18.0). 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

Exerp Staff 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

Seconds Pro Interval Timer holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: Seconds Pro Interval Timer has 12K ratings behind it against 1.2K, so its average is the more settled of the two. Written reviews point the same way: 80% of Seconds Pro Interval Timer's written reviews are positive against 19% of Exerp Staff's.

UpkeepUpdate frequency

Seconds Pro Interval Timer ships an update fortnightly, Exerp Staff every 3 weeks. The most recent releases landed on October 19, 2026 and October 20, 2026 respectively.

Scorecard7 real differences · 4 level
Seconds Pro Interval Timer versus Exerp Staff: the parameters behind the verdict, then further details
ParameterSeconds Pro Interval TimerExerp Staff
Price$7.99Free — better
Rating4.8 (12K ratings) — better4.4 (1.2K ratings)
Positive reviews79.7% of reviews — better19.1% of reviews
Number of ratings12K — better1.2K
Update frequencyFortnightly — betterEvery 3 weeks
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
Size94 MB54 MB
Age rating4+9+
DeveloperRunloop LtdExerp ApS

Customer experience

Seconds Pro Interval Timer

All ratings12,104 ratings
Positive94.7%
Neutral1.9%
Negative3.4%
Written reviews1,520 reviews
Positive79.7%
Neutral6.0%
Negative14.3%

Exerp Staff

All ratings1,231 ratings
Positive84.2%
Neutral3.9%
Negative11.9%
Written reviews47 reviews
Positive19.1%
Neutral10.6%
Negative70.2%

User reviews

Seconds Pro Interval Timer

From 12K App Store ratings

What we love

  • ⭐ Great updates
  • 🤖 Amazing voice prompts
  • 👍 Easy to use
  • 🎨 Highly customizable
  • 🔧 Versatile for various workouts

Room to improve

  • 🐛 Occasional bugs and glitches
  • 🔌 Music volume issues
  • 🔍 Complicated setup for some features
  • 🌐 Sync/sharing issues between devices
  • 🔇 Inconsistent audio cues

Exerp Staff

From 1.2K App Store ratings

What we love

  • 💡 Keeps appointments organized
  • 👍 Reliable and effective for entrepreneurs

Room to improve

  • 🐛 Constantly logging users out
  • 🐛 Unreliable connection between app and desktop
  • 🐛 Issues with class/appointment visibility
  • 👎 Difficult to navigate and use
  • 👎 Outdated and unintuitive UI design

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

Exerp Staff

Reported bugs

4 issues
  • Disappearing bookings
  • Inaccurate class/appointment availability
  • Crashes and freezes
  • Login issues

Requested features

5 requests
  • Add notifications for bookings and appointments
  • Implement weekly/monthly calendar view
  • Allow access to past sessions and bookings
  • Improve client search and management functionality
  • Sync app with desktop for seamless booking experience

In-app purchases

None

Seconds Pro Interval Timer

No in-app purchases

None

Exerp Staff

No in-app purchases

Questions

Is Seconds Pro Interval Timer free?
Seconds Pro Interval Timer costs $7.99, with no in-app purchases.
Is Exerp Staff free?
Exerp Staff is free to download, with no in-app purchases.
Which has better reviews, Seconds Pro Interval Timer or Exerp Staff?
Seconds Pro Interval Timer is rated higher. Seconds Pro Interval Timer averages 4.8 out of 5 from 12K ratings, while Exerp Staff averages 4.4 from 1.2K ratings.
Do Seconds Pro Interval Timer or Exerp Staff have ads?
Neither Seconds Pro Interval Timer nor Exerp Staff shows ads.
Which is updated more often, Seconds Pro Interval Timer or Exerp Staff?
Seconds Pro Interval Timer ships an update fortnightly, and Exerp Staff every 3 weeks. Most recently, Seconds Pro Interval Timer was updated on October 19, 2026 and Exerp Staff on October 20, 2026.

Other comparisons