Sick of relying on your phone or constantly glancing at your watch when you are shredding pounds on the elliptical trainer? Ready for a workout timer that’s both reliable and customizable?

The GymNext Flex Timer claims to have your back.

This fitness timer has many features to help you get the most out of your workouts, including a customizable display, a heart rate monitor, multiple programming modes, and a remote.

In this GymNext Flex Timer review, we will determine if it is as good as it says it is.

GymNext Flex timer

GymNext Flex Timer

  • Loud buzzer
  • Strong Bluetooth connection
  • Clear LED display

Evander’s Personal GymNext Flex Timer Summary:

To put it simply, the GymNext Flex Timer is a top-notch gym timer that delivers quality and convenience.

The buzzer is loud, the display is clear, and the app is user-friendly and reliable.

While it may be pricey and the gym edition is not worth the extra cash, this timer is worth considering if you want a reliable and efficient workout tool.

Plus, it’s way better than relying on a free mobile app.

affiliate disclaimer

I review products independently but I might earn affiliate commissions if you decide to buy items through links on this page.

What is the GymNext Flex Timer?

Purple infographic with an image of the gymnext flex timer. text displays: What is the GymNext Flex Timer

The GymNext Flex Timer is a nifty little gadget that helps you track and time your workouts. 

It’s basically a high-tech stopwatch that lets you customize your timer settings and choose from multiple modes. 

It’s compact enough to fit in your gym bag or small home gym and comes with a handy remote control so you can start and stop your timer from afar.

Who Created the GymNext Flex Timer?

The folks at GymNext, a group of fitness enthusiasts who wanted to make it simpler for people to stay on top of their workout game, brought you the GymNext Flex Timer. 

They’re all about providing top-notch workout gear that helps you reach your fitness goals and crush your personal bests.

Product Pros
  • You can customize your timer settings
  • Multiple timer modes to choose from
  • Remote control convenience
  • It’s user-friendly
  • Compact and portable
Product Cons
  • It’s a bit pricey compared to other workout timers
  • If you don’t conceal the wire, it looks ugly

For who it is made

Purple image with a picture of Drake smiling. Text displays: for who it is made.

It’s best for solo or small-group workout warriors who need a reliable timer to stay on track.

If you are one of the following people you will definitely love the GymNext Flex Timer:

The Fitness Enthusiast

The GymNext Flex Timer is tailor-made for fitness enthusiasts who want to track their progress and improve their workouts.

This is the best timer for you if you’re all about sticking to your routine and need a timer that you can customize to fit your specific needs.

The Personal Trainer

Personal trainers, this one’s for you!

The GymNext Flex Timer is the perfect tool to help you keep your clients on track during their workouts.

With the remote control, you can easily control and manage the timer from a distance, making it a breeze to keep everyone on schedule.

And as a bonus, you can connect multiple clocks and timers (handy for big groups)

For who it is not made

Purple image with a picture of Drake shaking his head. Text displays: for who it is not made.

On the flip side, some folks should not buy this gym timer.

The Crowded Gym Avoider

If you prefer not to work out in a bustling gym or noisy environment, the GymNext Flex Timer may not be the best fit for you.

It’s not ideal for you if you find it hard to concentrate when there’s a lot of commotion around (the buzzing of a Bluetooth-controlled gym timer can be loud.)

The Internal Clock Follower

If you prefer to rely on your internal clock to keep you on track during your workouts, this Bluetooth-controlled gym timer may not be necessary for you.

Hey, I get it. You just don’t need a source of motivation or a timer at all. No big deal!

What Customers are Saying…
  • The display is large and bright, making it easy to read.
  • The app is user-friendly and intuitive to use for programming the timer.
  • The GymNext Flex Timer is well worth the investment, even if it is a bit expensive.
  • The customer service is excellent and responsive to any issues.
  • The GymNext Flex Timer is better than other cheaper timers on the market.
  • Too loud for apartment complexes.
  • The app can be a bit complex to use, but customer service is helpful.

Best Features of The GymNext Flex timer 

Purple infographic with an image of a checklist. text displays: Best Features of The GymNext Flex timer

The GymNext Flex Timer is more than just a timer. It’s like having a cool, versatile fitness watch designed to make you sweat.

It comes in two editions (the home edition and the gym edition), both of which are almost identical.


If you want to get into the nitty gritty and check the differences, you may want to read the tech specs section below.

With that being said, here are some of its awesome features:

GymNext Flex timer mounted


The display on the GymNext Flex Timer is like a mini light show

It’s bright, easy to read, and even customizable to show different colors for each programming mode. 

As if you were throwing a mini rave party in your (home) gym.

Evander’s opinion

This is also where the biggest difference between the home edition and the gym edition is.

The gym edition has a bigger, slightly brighter LED display.

Interval timer app

The gym timer-controlled Flex Timer app is truly a genie in a bottle.

With the interval training timer app, you can create and save custom workouts and workout routines, and adjust the timer settings, volume, and much more.


With an audio sync feature that connects multiple timers at once, the GymNext Flex Timer is perfect for personal trainers who want to boss multiple clients around or gym owners who want to keep all their gymgoers on the same page. 

Whether you want to synchronize them to buzz all at once or set them up to buzz at different intervals, the possibilities are endless with the Flex timer app.

flex timer app

Programming modes

Programming Modes

The programming modes on the GymNext Flex Timer are endless (literally). With modes like a count up/down timer, tabata timer, FGB timer, EMOM timer, interval timer, stopwatch, and custom timer, you’ll never get bored.

And with the app, you can build your timer modes. How much do you ask for? Unlimited! How cool is that?

Here is a list of the timer modes that are already good to go:

  • Count up/down timer
  • Tabata timer
  • FGB timer
  • EMOM timer
  • Interval timer
  • Stopwatch
  • Custom timer


The range on the GymNext Flex Timer is very decent for a gym timer.

It has a range of 100 feet according to GymNext, but multiple customers report that it can easily go up to 200 feet without making a fuss.

And let’s be real, whose home gym is that big?

Bluetooth sign

Heart beat sign

Heart Rate Monitor

So how can a gym timer that’s mounted on a wall 10 feet away from you monitor your heart?

Simple, it doesn’t.

It connects to your smartwatch or fitness tracker via the phone app and displays the data on the timer.

The more accurate your smartwatch or fitness tracker, the more accurate the heart rate monitor.


The GymNext Flex Timer has one hack of a loud buzzer (95 decibels to be exact) which can be adjusted in the interval timer app.

It’s loud, clear, and adjustable, so you can set it to a level that’s comfortable for you.


If you somehow think the timer isn’t loud enough, you can also use a Bluetooth speaker or Television to replace the buzzer.

What Is Inside The Box?

Purple image with a picture of three boxes. Text displays: What is inside the box?

Ready to feel like a kid on Christmas morning? Here’s what you’ll find in the box of the GymNext Flex Timer:

  • GymNext Flex Timer
  • Remote control
  • Wall mounting hardware
  • User manual


And if you want to accessorize, there are some cool extras you can add to your cart:

  • Tripod Stand 
  • Protective carrying case 
  • Additional remote controls 

The tripod stand, in particular, is ideal for doing interval training workouts outside.

Tech Specs

Display:2.3” LED display with digits
Bluetooth range:100 feet
Buzzer volume:95db (Adjustable in-app)
Workouts saved:Unlimited
Dimensions:13″ x 4.7″ x 2.2″
Weight:3.5 lbs
Mounting Brackets:4 included

How Much Does the GymNext Flex Timer Cost?

Purple image with a picture of dollar bills and a woman thinking. Text displays: What is the Price?

The Home Edition goes for around $170 while its big brother (the gym edition) goes for $299.

Worry-Free Workout: The GymNext Flex Timer Warranty

Purple infographic with an image of a warranty sign. text displays: Worry-Free Workout: The GymNext Flex Timer Warranty

The GymNext Flex Timer comes with a warranty that’s like a bodyguard for your timer—it’s got your back.

The one-year limited warranty covers any defects in materials or workmanship, so you can rest easy knowing you’re covered.

Evander’s opinion

Keep in mind that the warranty won’t cover damages caused by accidents, misuse, or normal wear and tear.

So I recommend being gentle with your Flex timer.

GymNext Flex Timer Alternatives: When You’re Just Not Feeling the Love

Purple infographic with an image of the Slevio gym timer mounted on a metal surface. text displays: GymNext Flex Timer Alternatives

If you’re not feeling the GymNext Flex Timer, don’t worry—there are other fish in the sea. Here are three alternatives to consider:

Rogue home gym timer

#1 Rogue Home Timer

The Rogue Home Timer is like the GymNext Flex Timer’s simpler cousin.

It has a big and bright LED display and offers programming modes such as count up/down, Tabata, and interval timer.

Plus, it’s a bit cheaper than the GymNext Flex Timer, so it’s a great option if you don’t want to spend an arm and a leg on a gym timer.

#2 WERPOWER Seesii LED Interval Timer

The WERPOWER Seesii LED Interval Timer is like the GymNext Flex Timer’s little brother—it’s compact and portable.

You can mount it on a wall or take it with you in your gym bag.

It also offers programming modes like Tabata, EMOM, and interval timing.

And it’s more affordable than the GymNext Flex Timer.

Seesi Gym Timer
Sleevio gym clock

#3 SLEVIO Portable Gym Timer

The SLEVIO Portable Gym Timer is like the GymNext Flex Timer’s versatile cousin. It offers several programming modes, such as count up/down, Tabata, and interval timer.

Evander’s opinion

My favorite feature of the SLEVIO Timer is the powerful magnet on the backside.

No need to act like Bob the Builder; simply stick it to a metal surface and I’m good to go.

Comparison Table

DisplayBluetooth RangeBuzzer VolumePower sourcePrice
GymNext gym clocks, best home gym timerGym Next Flex TimerLED display with digits100 feet95db (Adjustable in-app)AC$170-$299
Rogue home gym timerRogue Home TimerLED display with digitsUnspecifiedUnspecifiedAC / Battery$299
Seesi Gym TimerWERPOWER Seesii LED Interval TimerLED display with digitsUnspecified85db (Adjustable in-app)USB/Battery$50
Sleevio gym clockSLEVIO Portable Gym TimerLED display with digitsUnspecifiedUnspecifiedAC / Battery$50

Sweating it Out with the GymNext Flex Timer: My Personal Experience

Purple infographic with sad and happy emojis. Text displays: My personal experience

To be honest, I don’t personally own the GymNext Flex Timer, but I’ve used it for group workouts in several gyms, so I’ve got some insights.

Here are my thoughts:

First of all, it’s ridiculous that they charge almost $100 extra just for a slightly bigger size in the gym edition.

I’d rather have two small timers that I can move around to get the best viewing angle than one large timer.

Secondly, the mounting brackets could be better.

I’m no construction worker, but I’ve seen other gym timers with a simple magnet on the back which allows you to stick it to any gym machine and does the job just fine, so I’m not sure why a high-end timer doesn’t have this convenience.

All that being said, the GymNext Flex Timer is still one of the best timers I’ve used.

I’ve never had any connectivity issues or accuracy problems during workouts, and I even tested it outside the gym, and it still worked from over 150 feet away.

The interval timer app is user-friendly, and I can program a new timer in under 10 seconds.

While it is on the pricier side, it gets the job done and is easy to use, so I would definitely recommend it, especially if you are currently looking to replace your smartphone timer apps.

Should You Buy the GymNext Flex Timer?

The GymNext Flex Timer is a personal drill sergeant but instead of yelling you got a loud buzzer.

With a customizable display, heart rate monitor, and remote control, it has some cool features for every workout. 

Though it’s pricier and you are still limited to wherever your power outlet is, it’s a valuable investment if you ask me.

If you’re budget-conscious, the Rogue Home Timer, WERPOWER Seesii LED Interval Timer, and SLEVIO Portable Gym Timer are affordable and solid alternatives to consider.

So, should you buy the GymNext Flex Timer? If you want to have a quality gym timer that is a great addition to your home gym and that’s versatile, then absolutely! 

With a one-year limited warranty, there’s no better time to grab a GymNext Flex Timer and crush your workouts!


To connect your Gymnext Flex Timer, simply download the GymNext app, turn on Bluetooth on your device, and follow the instructions in the app to pair your device with the timer.

To use a Flex timer, select the desired programming mode and start the timer. The display will show the time remaining for the current interval.

To program your Gym Boss timer, press the “mode” button until you reach the desired setting, then press the “start/stop” button to confirm. Repeat this process to set up additional intervals. Finally, press and hold the “start/stop” button to save your settings.

To set a Gymboss timer, press and hold the “mode” button until the display flashes, then use the “+” and “-” buttons to adjust the time intervals. Press the “mode” button again to start the timer.