Comparison

GymNext Flex Timer vs Zen Planner Mobile

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

Zen Planner Mobile

This app streamlines daily operations for fitness business staff, enabling class check-ins, payment processing, and member profile management. It offers new tools for staff to clock in/out, apply discounts, and celebrate member milestones, all within an intuitive and reliable interface.

Highlights
  • Class and appointment check-ins
  • Payment collection and bill management
  • Member profile updates
  • Staff clock-in/out for payroll
  • Discount and promotion application
  • Schedule filtering by staff member
Features
Read full description

The new Zen Planner Staff App has everything you know and love—plus more. We’ve rebuilt the Staff App from the ground up to make managing your day faster, easier, and more reliable. With complete feature parity from the old app and exciting new tools, staff can stay connected, organized, and focused on members. This is Phase 1 of the new Zen Planner mobile experience: staff features are available today, and member functionality will be added in 2026. Everything You Already Use, Now Better - Check members into classes, appointments, and events - Collect payments and manage unpaid bills - Update customer profiles and photos - Capture signed waivers and contracts - View and filter schedules - Access multiple Zen Planner accounts in one place New Features You’ll Love - Intuitive Design & Speed – Clean, modern layout with faster load times and rock-solid reliability. - Celebrate Special Moments – Recognize birthdays, anniversaries, and milestones (including parent access for martial arts programs). - Staff Clock In / Out – Log hours directly in the app for accurate payroll and coverage. - Discounts & Promotions – Apply special offers and loyalty perks instantly. - Sort Schedules by Staff Member – See exactly who’s leading each class or appointment. Why Staff Choose Zen Planner - Less Admin, More Impact – Free up time to connect with members and students. - Easy to Learn – Simple design that requires no training. - Future-Ready – Today: staff features. Tomorrow: members. All in one app. The Zen Planner Vision Zen Planner, a Daxko company, powers thousands of fitness businesses worldwide. The new Staff App is the first step in creating one unified app experience for staff and members. - Phase 1 (Now): Complete staff features + new tools - Phase 2 (2026): Member functionality added - Future: One app for your entire community Getting Started - Your business must use Zen Planner, and you’ll need valid staff credentials to log in. - Not a Zen Planner customer? Learn more at www.zenplanner.com. Need help? Contact support@zenplanner.com.

Screenshots

GymNext Flex Timer4 screens
Zen Planner Mobile4 screens

Verdict

The call

The clearest difference is review sentiment: GymNext Flex Timer at 72% against Zen Planner Mobile's 12%. GymNext Flex Timer also leads on rating (4.8 vs 3.0) and ratings volume (2.1K vs 43). Zen Planner Mobile's advantage is in-app purchases (none vs 2). On price, update cadence, ads and monetization model 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. Zen Planner Mobile asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

GymNext Flex Timer holds the better App Store score, 4.8 against 3.0. That said, the two scores are not equally well evidenced: GymNext Flex Timer has 2.1K ratings behind it against 43, so its average is the more settled of the two. Written reviews point the same way: 72% of GymNext Flex Timer's written reviews are positive against 12% of Zen Planner Mobile's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 13, 2026 and October 8, 2026 respectively.

Scorecard5 real differences · 5 level
GymNext Flex Timer versus Zen Planner Mobile: the parameters behind the verdict, then further details
ParameterGymNext Flex TimerZen Planner Mobile
PriceFreeFree
Rating4.8 (2.1K ratings) — better3.0 (43 ratings)
Positive reviews71.7% of reviews — better11.8% of reviews
Number of ratings2.1K — better43
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreeFree
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone
Requires iOS15.0 — better16.4
Further details — not scored
Size185 MB103 MB
Age rating4+4+
DeveloperHomick EnterprisesDaxko LLC

Customer experience

GymNext Flex Timer

All ratings2,119 ratings
Positive96.6%
Neutral1.1%
Negative2.4%
Written reviews173 reviews
Positive71.7%
Neutral6.4%
Negative22.0%

Zen Planner Mobile

All ratings43 ratings
Positive48.8%
Neutral4.7%
Negative46.5%
Written reviews17 reviews
Positive11.8%
Neutral5.9%
Negative82.4%

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

Zen Planner Mobile

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
None

Zen Planner Mobile

No in-app purchases

Questions

Is GymNext Flex Timer free?
GymNext Flex Timer is free to download, with in-app purchases available.
Is Zen Planner Mobile free?
Zen Planner Mobile is free to download, with no in-app purchases.
Which has better reviews, GymNext Flex Timer or Zen Planner Mobile?
GymNext Flex Timer is rated higher. GymNext Flex Timer averages 4.8 out of 5 from 2.1K ratings, while Zen Planner Mobile averages 3.0 from 43 ratings.
Do GymNext Flex Timer or Zen Planner Mobile have ads?
Neither GymNext Flex Timer nor Zen Planner Mobile shows ads.
Which is updated more often, GymNext Flex Timer or Zen Planner Mobile?
GymNext Flex Timer ships an update every 3 weeks, and Zen Planner Mobile every 3 weeks. Most recently, GymNext Flex Timer was updated on October 13, 2026 and Zen Planner Mobile on October 8, 2026.

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