Comparison

GymNext Flex Timer vs Restrr

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

Restrr

Optimize your strength training and HIIT workouts with a smart rest countdown and automatic set counter. Stay focused with customizable notifications and live activity integration. Train more efficiently and effectively.

Highlights
  • Smart rest countdown
  • Automatic set counter
  • Live Activities & Dynamic Island integration
  • Customizable notifications
  • Workout optimization
Read full description

Tired of guessing your rest periods and losing track of sets? Gym Timer is the essential tool for every serious athlete and gym-goer. Designed to keep your strength training, muscle building, and HIIT workouts on track, our app ensures you make the most of every second. Stop wasting time and start training with purpose. Features That Optimize Your Workout - Smart Rest Countdown: Our clear, easy-to-read rest countdown ensures you hit your next set at the perfect time, every time. - Automatic Set Counter: Focus on your reps, not your count. The app automatically tracks your sets, making your workout seamless. - Live Activities & Dynamic Island: Stay connected to your workout timer directly from your lock screen or Dynamic Island. A quick glance is all you need. - Customizable Notifications: Get notified with a sound or vibration the moment your rest period is over. You'll never miss a beat. Whether you're a beginner or a seasoned lifter, the Gym Rest Timer is the personal coach you've been waiting for. It's more than just a timer—it's your key to a more efficient, focused, and effective workout. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

GymNext Flex Timer4 screens
Restrr4 screens

Verdict

The call

The clearest difference is review sentiment: GymNext Flex Timer at 72% against Restrr's 0%. GymNext Flex Timer also leads on rating (4.8 vs 3.0) and monetization model (free vs free with in-app purchases). On price, 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 Restrr sells 3 in-app purchases, starting at $1.99 per month. 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 3.0. That said, the two scores are not equally well evidenced: GymNext Flex Timer has 2.1K ratings behind it against 2, 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 0% of Restrr's.

UpkeepUpdate frequency

GymNext Flex Timer ships an update every 3 weeks, Restrr every 3 months. The most recent releases landed on September 22, 2026 and September 8, 2026 respectively.

Scorecard7 real differences · 3 level
GymNext Flex Timer versus Restrr: the parameters behind the verdict, then further details
ParameterGymNext Flex TimerRestrr
PriceFreeFree
Rating4.8 (2.1K ratings) — better3.0 (2 ratings)
Positive reviews72.4% of reviews — better0.0% of reviews
Number of ratings2.1K — better2
Update frequencyEvery 3 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad
Requires iOS15.0 — better18.5
Further details — not scored
Size185 MB19 MB
Age rating4+4+
DeveloperHomick EnterprisesMatija Gunther

Customer experience

GymNext Flex Timer

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

Restrr

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

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

Restrr

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
3 purchases

Restrr

Subscriptions2
  • Monthly$1.991 Month
  • Annual$8.991 Year
One-time1
  • Lifetime$3.99

Questions

Is GymNext Flex Timer free?
GymNext Flex Timer is free to download, with in-app purchases available.
Is Restrr free?
Restrr is free to download, with in-app purchases available.
Which has better reviews, GymNext Flex Timer or Restrr?
GymNext Flex Timer is rated higher. GymNext Flex Timer averages 4.8 out of 5 from 2.1K ratings, while Restrr averages 3.0 from 2 ratings.
Do GymNext Flex Timer or Restrr have ads?
Neither GymNext Flex Timer nor Restrr shows ads.
Which is updated more often, GymNext Flex Timer or Restrr?
GymNext Flex Timer ships an update every 3 weeks, and Restrr every 3 months. Most recently, GymNext Flex Timer was updated on September 22, 2026 and Restrr on September 8, 2026.

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