Comparison

GymNext Flex Timer vs BoxClock

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

BoxClock

This app provides a customizable gym clock with various timer modes like EMOM, AMRAP, and Tabata. It features a clear, large display designed for visibility across a room and offers audio cues for transitions. Save your favorite workout configurations for quick access.

Highlights
  • Multiple timer modes (EMOM, AMRAP, Tabata, Custom)
  • Large, clear LED-style display
  • Customizable audio cues
  • Lock Screen and Dynamic Island integration
  • Save up to 10 workout configurations
  • No ads or subscriptions
Features
Read full description

EMOM, AMRAP, Tabata, Custom Intervals. The gym clock on your wall, but on your phone. No ads. No recipes. No workout videos. No social feed. No account to create. No subscription to forget about. Just a gym clock that does one thing extremely well. Designed to look and feel like the LED timers mounted on gym walls, BoxClock turns your iPhone or iPad into the clock you already know how to use. Glance up, read the time, get back to work. 7 TIMER MODES - EMOM (Every Minute on the Minute) — Set your rounds and interval length. Audio beeps at every minute. - AMRAP (As Many Rounds as Possible) — Countdown timer with a swipe-up round counter. - Tabata — Classic 20/10 or fully configurable work/rest intervals. Red for work, amber for rest. - Custom Intervals — Configure sets, rounds, work time, rest time, and rest between sets. Your workout, your rules. - Countdown — Set a duration and go. Big LED digits count down to zero. - Stopwatch — Count up from zero. Simple and reliable. - Clock — Real-time display in 12h or 24h format. Mount your phone on the wall. LIVE ACTIVITIES ON THE LOCK SCREEN - See your timer ticking on the Lock Screen and Dynamic Island - Round count, phase (WORK / REST), and big digits — no need to unlock - Pre-countdown "GET READY" view so you never miss the start - Pause directly from the Lock Screen and resume without opening the app LOOKS LIKE A REAL GYM CLOCK - 7-segment LED digits with visible unlit segment traces - Green digits for rounds, red for time, amber for rest - Black background, high contrast, readable from across the room - Landscape display fills your screen edge to edge AUDIO CUES - 3-2-1 beeps before every workout starts - Beeps at work/rest transitions and round changes - Alert when the workout is done - Mixes with Spotify, Apple Podcasts, and your own music — no pausing your playlist - Keeps playing with the phone face-down, in background, or with the screen locked - Plays even when your phone is on silent SAVE YOUR WORKOUTS - Bookmark up to 10 timer configurations - Tap a saved workout and go — no re-entering settings - Each mode remembers its own settings between sessions CONFIGURABLE START COUNTDOWN - Set your pre-workout countdown anywhere from 0 to 60 seconds - Set it to 0 to skip the countdown entirely and start instantly JUST A CLOCK - Screen stays on during active timers - No dimming, no interruptions - Works on iPhone and iPad - No account. No ads. No tracking. No bloat. PRICING Clock, Stopwatch, and Countdown are free forever. Unlock EMOM, AMRAP, Tabata, Custom Intervals, saved workouts, and the configurable countdown for $4.99. One time. No subscription. No "premium tier". Pay once, train forever. BoxClock is made by Tiny Delights. One app. One job. Done well.

Screenshots

GymNext Flex Timer4 screens
BoxClock4 screens

Verdict

The call

The clearest difference is rating: GymNext Flex Timer at 4.8 against BoxClock's 4.0. GymNext Flex Timer also leads on monetization model (free vs free with in-app purchases) and ratings volume (2.1K vs 1). On price, update cadence, ads and in-app purchases 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 and BoxClock sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

GymNext Flex Timer holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: GymNext Flex Timer has 2.1K ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

GymNext Flex Timer ships an update every 3 weeks, BoxClock every 2 weeks. The most recent releases landed on October 18, 2026 and October 1, 2026 respectively.

Scorecard5 real differences · 5 level
GymNext Flex Timer versus BoxClock: the parameters behind the verdict, then further details
ParameterGymNext Flex TimerBoxClock
PriceFreeFree
Rating4.8 (2.1K ratings) — better4.0 (1 ratings)
Positive reviews71.7% of reviews—
Number of ratings2.1K — better1
Update frequencyEvery 3 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size185 MB2 MB
Age rating4+4+
DeveloperHomick EnterprisesCarlos Manuel Gomes Vilhena

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

BoxClock

Not enough reviews yet to summarise bugs or requests.

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
1 purchases

BoxClock

One-time1
  • BoxClock Premium$4.99

Questions

Is GymNext Flex Timer free?
GymNext Flex Timer is free to download, with in-app purchases available.
Is BoxClock free?
BoxClock is free to download, with in-app purchases available.
Which has better reviews, GymNext Flex Timer or BoxClock?
GymNext Flex Timer is rated higher. GymNext Flex Timer averages 4.8 out of 5 from 2.1K ratings, while BoxClock averages 4.0 from 1 ratings.
Do GymNext Flex Timer or BoxClock have ads?
Neither GymNext Flex Timer nor BoxClock shows ads.
Which is updated more often, GymNext Flex Timer or BoxClock?
GymNext Flex Timer ships an update every 3 weeks, and BoxClock every 2 weeks. Most recently, GymNext Flex Timer was updated on October 18, 2026 and BoxClock on October 1, 2026.

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