The fastest way to improve your swim is to improve your technique.

Accurately quantify your technique right on the pool deck. With eo SwimBETTER you can measure the applied force of your hands in up to six directions with a device small enough to fit in your palm. It’s a game-changing moment for the sport.

eo’s scientists developed SwimBETTER for:

Swim Coaches

to enhance your eye and inform your gut with never-before-seen data insight.


to reduce the time between stroke analysis and intervention so you swim faster… faster.


to become more efficient and effective in the swim leg, conserving your energy for the bike and run.



Available with either a 90 or 15-minute recording capacity, there’s an eo SwimBETTER to suit individual swimmers, squads, teams, long distance swimmers and triathletes.

We love the smell of chlorine in the morning.

eo SwimBETTER starts from US$799
plus eo membership.

30 day money back guarantee | Free express shipping | Free periods apply on some memberships

Analyse, adapt and accelerate your progress with eo SwimBETTER. We’re so sure it will knock your goggles off that we offer a 30 day money back guarantee on every order.

An eo SwimBETTER membership is required for every swimmer to download and store their data. Gold and silver memberships, and team memberships for six or more swimmers, are available and can be paid on an annual or monthly basis. Your membership is automatically activated upon delivery of your order.

Every pair of handsets comes with some free time on your membership.

When you purchase a pair of eo SwimBETTER handsets, we’ll cover some of your membership fees to give you a chance to get the hang of them and understand all the mind-blowing data:

  • Six months free on a single membership if less than six memberships are purchased with any pair of handsets – your membership can be purchased at the same time as the handsets or later. If the membership is purchased later, the free period will be added to the first membership purchased on the same account as the handsets.
  • One month free on every team membership (six or more memberships) when purchased with any pair of handsets.
Never lose track of your data. Ever.

Your eo membership allows you to download and view your accumulated swim data and keep it all safe and secure in one place. No matter if you leave your team or club, you’ll never lose access. Whenever you want to dive into your data, simply log in to your eo Account.

Find out more

Product overview

Track your performance in the pool at a glance with a trendline showing your progress over time across a range of different metrics including: Force per stroke, Stroke rate, Distance per stroke, Strokes per lap, Time, Average velocity, and Propulsion.

Watch our video: Dashboard data explained

Improve your efficiency at different speeds.

Measure your total force output alongside your stroke rate and, for the first time ever, see the variations in your force as your stroke rate changes. Push for progress by reducing your force while maintaining the same swim speed and show evolution who's boss. 

Watch our video: Stroke Rate & Force data explained

Swim faster by understanding your force distribution.

See how your force is distributed - helping you adjust your technique and optimise your propulsion by cutting unnecessary force and wasted energy. That's the science of defiance. 

Watch our video: Force Field data explained

Hand at the right depth? Pushing across your body? Sweeping too wide?

Pin down where you can progress by tracking the path of your hand through every phase of your stroke - from the front, side, and top down. Identify areas of your stroke that may be compomising your speed and efficiency. With a Gold membership, you can even see your hand speed at any point. 

Watch our video: Stroke Path & Hand Velocity data explained

Be better more often.

Consistency is key. Get an instant comparison of yours by selecting any number of your left and right strokes to see an overlay of their paths. Allowing you to identify any degredation under fatigue, changes at varying speeds, and anomalies. Consistency of good technique will get you swimming faster... faster.

Watch our video: Consistency data explained

Identify your propulsive time.

Break down the glide, pull and recovery phases of every stroke to see the percentage of your overall stroke spent in each phase. Optimise your glide and pull phases to level up your swim. 

Watch our video: Stroke Phases data explained

Find your missing link.

Dive deeper into your force measurement - pinpointing your strokes strengths and where you're losing force. Seeking that extra level of detail? Get a moment by moment understanding of changing forces within each stroke so you can wave your limits goodbye.

Watch our video: Force vs Time data explained

See exactly where in your stroke you can gain speed.

Map propulsion through your hand path and see exactly where in each stroke you’re strongest versus where you may be letting water slip away. 

Watch our video: Stroke Path & Force data explained

Seamlessly sync eo SwimBETTER data to footage of the swim to make diagnosing stroke imprefections even simpler. 

Watch our explainer to see how it works: Syncing Data to Video

Need help analysing your eo SwimBETTER data? Watch our explainer for a step-by-step walk through each metric. You’ll pick up some pointers on things to look for in your data and some suggestions on tweaks you can make to swim faster... faster.

This video runs for 20 minutes, so if you’d prefer to focus on just one or a few metrics, check out the other videos below.

A quick breakdown of the home of your progress - your eo SwimBETTER Dashboard. Provides instructions on how to include and exclude swims from your dashboard metrics. It also includes advice on how you want to see each of your trend lines progress.

Breaking down the most basic of the eo SwimBETTER metrics – Stroke Rate & Force. Understand what to look for in your data and some tips on how to improve your swimming efficiency.

In the eo SwimBETTER Force Field explainer, you will discover how your forces are distributed across six different vectors. You will also learn how to improve your force distribution to improve swim speed. 

Understand how to read your eo SwimBETTER Stroke Path and Hand Velocity data and discover ways to refine your stroke path to improve your force distribution.

Learn how your eo SwimBETTER Consistency data can help you instantly pick up any anomalies in your stroke.

Understand what the eo SwimBETTER Stroke Phases data can tell you about the different phases of every one of your strokes.

The most interesting of the eo SwimBETTER metrics, but often the most daunting, this Force vs Time explainer will help you pinpoint where your stroke’s strengths and weaknesses lie.

Stroke Path & Force combines our Stroke Path and Hand Velocity chart with our Force vs Time chart to show you exactly how much force you're generating, in what direction and where your hand is at every point in every stroke. It also shows your hand speed at any point in the stroke. 

Here's what you get: two eo SwimBETTER handsets, a pair of straps in your selected size, two eo charging clips, two USB-C charging cables, a pair of eo sunscreens to clip over your handsets when you're swimming outdoors, a tiny towel to dry off your handsets, and a storage case.

Fit is based on the width of your palm. You’ll be asked for this measurement at checkout so we can include the correct sized Velcro straps with your handsets.

Each eo SwimBETTER handset weighs in at just 30g / 1.06 oz. That’s about the same as a slice of bread.

Our handsets operate in fresh, chlorinated and salt water and up to 30 metres / 100 feet deep. eo SwimBETTER performs wherever you do. 

eo SwimBETTER90 records up to 90 minutes between downloads, while eo SwimBETTER15 records, you guessed it, up to 15.

Getting connected is simple. Your eo SwimBETTER communicates directly with the eo app using Bluetooth®.

Access your downloaded data anytime through your eo account, where it's stored securely in the Cloud. Once downloaded, your data is wiped from the handset so you can dive back in and record again. 

You can expect around three hours of recording between complete charges. Your handsets maximise the battery by automatically turning off after 10 minutes of inactivity. Clever. 

Just attach the charging clip to the charging port on the side of your handset, plug in the USB-C charging cable and power up. You're fully charged when the LEDs stop flashing.

“I always struggled to convert my pool speed to open water and had a hard time going sub-40, even in calm water at my 70.3 races. Finally invested in eo SwimBETTER and instantly learned my deficiencies. At my latest 70.3 race, I swam my 1.9km in 34:55.”

eo SwimBETTER90 Customer


Access your data anytime on both the eo SwimBETTER app or platform.

The eo SwimBETTER app

Track your progress on the go with full views of your historical swim data. You can also see an overview of key metrics for your favourite swims on your dashboard.
Download the eo app by clicking one of the icons below or search eo SwimBETTER in the App Store or Google Play.

The eo SwimBETTER platform

View your data in more detail on the eo platform with larger views of your charts. If you're a coach, or team admin, you can invite swimmers to join your team, split your team into squads, allocate swims in training to particular swimmers and keep track of their historical data. To access the eo platform, head to swimbetter.eolab.com and login with your eo Account details (email and password).




Leave a review

Wow! It’s like having a swim coach without having one!

“I am a former Army Officer and lifelong Martial Artist who switched to Triathlons back in 2014; since then I have raced 47 x 70.3s and 18 x 140.6s around the world.

Coming into the sport as an Adult Onset Swimmer, I initially struggled with the swim. I tried Master…”
Read more

Recommends this product: Yes


Stenchi (what Lionel Sanders called me when he misheard my name at the pool he trains at)

Detailed analytics to improve your stroke

“Great tool to see where your stroke is inefficient, so you can work on that part to improve your stroke. Jaimie Has been very helpful taking me through my data. I've seen great improvements in my speed!”
Read more

Recommends this product: Yes



Fantastic tool to optimize the swim stroke!

“I have been using the EO lab swim bands for about 6 months now and recently was able to synch video with the data also. These devices are a game changer from everyone from the beginner to the most elite swimmers. They give insight that you will never see with…”
Read more

Recommends this product: Yes



Amazing Data!

“The directional force and propulsion insights from the handsets are also superb. The dashboard provides propulsion values for a swim session, a lap, a stroke, and within a single stroke. Not only the force applied is provided but also the direction of the force and a very precise time of…”
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Recommends this product: Yes


Gregor M

Handy insights

“These devices are easy to use, provide quick feedback, and yield a wealth of information. I learned about aspects of my stroke using these that I had not gotten from on-deck coaching or video analysis. I look forward to continuing to improve with them!”
Read more

Recommends this product: Yes



Game Changer

“The eo SwimBetter sensors have absolutely revolutionized the art of self-coaching for swimming. As a long-distance triathlete, I am already familiar with analyzing data to improve performance. eo takes this to a new level with swimming - going far beyond what electronic goggles or any other tool currently on the…”
Read more

Recommends this product: Yes


Britt Landrum

Fantastic improvement for swimming world!

“First of all, I have to say the crew behind this product is fantastic and so helpful and there for each consumer... Just 10/10 at customer support and helpful tips and tricks... Love to ya'll

Swimbetter 15&90 sensors, need some time to learn and to know how to get the…”
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Recommends this product: Yes



Wow do I really swim like that?

“With a coach’s help I was easily able to correct some of the issues that were preventing me from swimming faster. It was easy to see where I was not being efficient and was wasting energy.”
Read more

Recommends this product: Yes



A game changer for aspiring athletes

“I am an age-group triathlete who trained freestyle with a personal elite coach for more than 4 years. The first thing that my new EO handsets revealed that my pulls were asymmetrical - more so than was visible to my coach. It took us almost 4 months until we managed…”
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Recommends this product: Yes



Measurement of Force from Every Direction

“One of the most important discoveries in the history of swimming. Many things are no longer immeasurable. Great synchronisation of technical and numerical data. Easy analysing that you can easily see the difference after each use. It is great that the team is very open to communication and it is…”
Read more

Recommends this product: Yes




“I love this product! Great support as well, as I had a few questions about the software.

I do appreciate the recent videos that do a more detailed dive into the software and what to look for and how to improve those areas in your swimming.

I often get asked…”
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Recommends this product: Yes



Always on the lookout to improve technique

“The data you get back from the eo swim better is amazing, especially when you combine it with the video so you can actually see where you lose power through the water, They are easy to use. It does take a bit to learn how to read the data and…”
Read more

Recommends this product: Yes



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