Comparison

GymNext Flex 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

GymNext Flex Timer

This app offers advanced interval training timing with customizable modes and the ability to control an external LED display. It integrates with wearables and heart rate monitors for a comprehensive workout experience.

Highlights
  • Control external LED displays
  • Multiple customizable timer modes (Tabata, EMOM, etc.)
  • Save and recall favorite workouts
  • Apple Watch control
  • Audio sync with music
  • Heart rate monitor integration
  • Control multiple LED displays
Features
Read full description

Meet the future of interval training. GymNext Flex Timer is the only timer app that combines powerful workout programming with control of large, wall-mounted LED displays—giving you the best of both worlds. Traditional gym timers rely on clunky remotes and are difficult to use. Mobile apps are flexible, but hard to see across the room. Flex Timer solves both. Build and control your workouts from your phone while displaying them on bright, easy-to-read LED screens anywhere in your gym. Perfect for HIIT, CrossFit, circuits, bootcamps, boxing, MMA, strength training, and more. Features: • Use the app on its own or connect to GymNext LED displays for maximum visibility • Core timer modes include Count Up/Down, Round, Tabata, EMOM, Mixed Intervals, and Sets with Rest • Plan your personal workouts or full classes in advance—everything ready in one tap • Share timers with athletes and trainers instantly using simple links • Save workouts to your library for quick access • Control your timer from Apple Watch—completely hands-free • Smart audio sync keeps your music and timer cues perfectly aligned • Connect multiple Bluetooth heart rate monitors and track performance in real time • Set custom heart rate zones for better training feedback • Control multiple timers across your gym at the same time • Run different workouts simultaneously for group training • Reliable Bluetooth control with no line-of-sight limitations “This will eventually become the standard for all gyms” – Garage Gym Reviews “All our coaches love the clock” – CrossFit Barrie “We love it to death” – Wolverine Strength & Conditioning Download Flex Timer and upgrade the way you train. We’re always improving. Have feedback? Reach us at support@gymnext.com

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

GymNext Flex Timer4 screens
Exerp Staff4 screens

Verdict

The call

The clearest difference is review sentiment: GymNext Flex Timer at 72% against Exerp Staff's 20%. GymNext Flex Timer also leads on rating (4.8 vs 4.4). Exerp Staff's advantage is in-app purchases (none vs 2). On price, ratings volume, update cadence and ads 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. GymNext Flex Timer sells 2 in-app purchases, starting at $8.99 per month. Exerp Staff asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

GymNext Flex Timer holds the better App Store score, 4.8 against 4.4. Both are backed by a comparable volume of ratings — 2.1K and 1.2K respectively. Written reviews point the same way: 72% of GymNext Flex Timer's written reviews are positive against 20% of Exerp Staff's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 22, 2026 and September 23, 2026 respectively.

Scorecard3 real differences · 7 level
GymNext Flex Timer versus Exerp Staff: the parameters behind the verdict, then further details
ParameterGymNext Flex TimerExerp Staff
PriceFreeFree
Rating4.8 (2.1K ratings) — better4.4 (1.2K ratings)
Positive reviews72.4% of reviews — better19.6% of reviews
Number of ratings2.1K — better1.2K
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size185 MB54 MB
Age rating4+9+
DeveloperHomick EnterprisesExerp ApS

Customer experience

GymNext Flex Timer

All ratings2,119 ratings
Positive96.6%
Neutral1.1%
Negative2.4%
Written reviews170 reviews
Positive72.4%
Neutral5.9%
Negative21.8%

Exerp Staff

All ratings1,223 ratings
Positive84.1%
Neutral3.9%
Negative11.9%
Written reviews46 reviews
Positive19.6%
Neutral10.9%
Negative69.6%

User reviews

GymNext Flex Timer

From 2.1K App Store ratings

What we love

  • 🚀 Versatile and customizable
  • 👍 User-friendly interface
  • 🔔 Reliable and consistent
  • 💪 Excellent for interval training
  • 🔊 Clear audio cues

Room to improve

  • 🐛 Audio cues sometimes stop working
  • 🔊 Lack of volume control
  • 🔍 Detailed instructions needed for beginners
  • ⏱️ Delayed countdown between phone and timer

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

GymNext Flex Timer

Reported bugs

2 issues
  • Saved timers not consistently loading
  • Segmented timers not saving properly

Requested features

4 requests
  • Watch app integration for remote control
  • Background audio playback when app is closed
  • Customizable voice options
  • Lap timer functionality

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

2 purchases

GymNext Flex Timer

Subscriptions2
  • Flex Timer Pro Monthly7 Days trial$8.991 Month
  • Flex Timer Pro Yearly1 Month trial$79.991 Year
None

Exerp Staff

No in-app purchases

Questions

Is GymNext Flex Timer free?
GymNext Flex Timer is free to download, with in-app purchases available.
Is Exerp Staff free?
Exerp Staff is free to download, with no in-app purchases.
Which has better reviews, GymNext Flex Timer or Exerp Staff?
GymNext Flex Timer is rated higher. GymNext Flex Timer averages 4.8 out of 5 from 2.1K ratings, while Exerp Staff averages 4.4 from 1.2K ratings.
Do GymNext Flex Timer or Exerp Staff have ads?
Neither GymNext Flex Timer nor Exerp Staff shows ads.
Which is updated more often, GymNext Flex Timer or Exerp Staff?
GymNext Flex Timer ships an update every 3 weeks, and Exerp Staff every 3 weeks. Most recently, GymNext Flex Timer was updated on September 22, 2026 and Exerp Staff on September 23, 2026.

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