You want to swim faster. Like, you want your 100 splits to actually drop, week over week. Maybe you’re chasing a Masters cutoff, or just sick of your friend beating you by three seconds every single lap. I’ve been there and am here to give you my two cents on the best fitness trackers for swimming to improve lap times and technique
I’ve researched this space meticulously, and the difference between a tracker that improves your lap times and one that just displays a number is bigger than people think. So this one’s personal — I’m picky about gear that pretends to help but doesn’t actually change anything.
What Faster Lap Times Actually Require
Faster lap times come down to a handful of things you can actually measure and fix. I’m summarizing them below:
Pacing discipline means holding your target split without a coach yelling it at you from the deck. And research on negative-split pacing shows that going out too hot burns through glycogen too early, which why your tempo can falter late in a set.
Stroke efficiency is the other half. Two swimmers can hit the same split with wildly different effort, and the difference usually comes down to distance per stroke (DPS) versus stroke rate. U.S. Masters Swimming’s own breakdown of the two is blunt about it: DPS is technique-driven and improves slowly, while stroke rate is easy to crank up and mostly just makes you tired faster. A watch that shows SWOLF — a metric coaches track that combines stroke count and time per length — alongside DPS trends tells you where your technique falls apart.
Real-time feedback is where it gets more nuanced. A 2025 study on AR-based feedback in youth sports found immediate correction genuinely improves motor learning and motivation. But the wider research on instant feedback found that more advanced athletes often retain technique better with some delayed feedback.
So the real answer is both: pacing alerts you feel mid-lap are great for catching a blown split before it wrecks your set. But you should still review your DPS and SWOLF trends after you get out.
That’s the technical translation of “I want to swim faster”: pacing alerts you feel in the moment, data you review afterward, and enough battery and screen visibility underwater that none of it gets in your way.
Swimming Fitness Trackers That Move the Needle
For real-time pace correction mid-lap
Garmin Forerunner 970
For swimmers who need to know when they’re off pace, the Garmin Forerunner 970 is an excellent starting point. Its Turn-Based Pacing Alerts fire a distinct wrist vibration the exact second you slip off your programmed split. And that’s exactly what we’re looking for.
I love how the Garmin Forerunner 970‘s 1.4-inch AMOLED display stays readable through water and foggy goggles. Plus, the automatic interval and stroke detection mean you’re not fumbling with buttons between lengths. DC Rainmaker’s in-depth review backs up that this is currently Garmin’s sharpest data watch, full stop.
Best for: the swimmer training against specific target splits who wants the watch to catch pacing mistakes before they compound.
For swimmers who don’t want a brick on their wrist
Garmin Foreunner 170
If your goal includes not adding drag every time your hand enters the water, the Forerunner 170 (or the even lighter 70) is a great call. Garmin combined SWOLF tracking and auto-rest detection in a lightweight case. Less mass on your wrist means less resistance on your catch.
The Garmin Forerunner 170 also has an open water swim profile, so if you ever swim outside a pool, spend the extra $50 and go with the 170. Garmin’s official announcement confirms both watches track full pool metrics — distance, pace, stroke type, and SWOLF—so if you just want pool-based metrics, both watches offer them.
Best for: swimmers who want detailed swim analytics for an affordable price and a watch that won’t slow them down.
For swimmers who live in the Apple ecosystem anyway
Apple Watch Series 11
The Apple Watch Series 11 is a no-brainer if you already own an iPhone. And its updates finally let apps like MySwimPro run complex pace-matching algorithms without killing the battery life. Meanwhile, the watch’s thinner case glides through the water better, so you can cut through each lap with ease.
What makes the Apple Watch Series 11 so great for swimming? MySwimPro’s own breakdown of its Apple Watch integration shows guided workouts, pace targets, and kick/drill tracking. Browse through it and you’ll see everything you need for pushing your lap times farther. My favorite part? The screen is now easier than ever to read underwater. Apple reengineered it to angle light better while you swim. Cool stuff.
Best for: swimmers already in the Apple ecosystem who’d rather add an app than a new device.
For swimmers who want to know exactly where their technique breaks down
Coros Pace Pro
If your goal is fixing your stroke, the Coros Pace Pro is worth considering. Its post-swim breakdown of stroke rate versus distance per stroke is the cleanest in the category. That comparison is everything: you get faster by either spinning your arms quicker or pulling more water per stroke, and most swimmers have no idea which one they’re doing. Coros’s own pool swim documentation confirms per-lap stroke rate is tracked and customizable right on the watch face.
I like the Coros Pace Pro because it sits in the sweet spot between the lightweight budget trackers and the full AMOLED data powerhouses. It’s screen and haptic pacing are genuinely 2025/2026 standard now, not an upsell.
Best for: swimmers whose splits are inconsistent and need to know if it’s their arm speed or their pull that’s the problem.
For solo swimmers with no coach on deck
FORM Smart Swim 2 Pro / LT
Smartwatches aren’t the only wearable that can improve your lap times. If you’re swimming alone with nobody watching your form, I love the FORM Smart Swim 2. It’s HeadCoach 2.0 puts a coaching signal in your line of sight through the AR lens display. From there, you can’t see it mid-stroke. It tracks head pitch and roll in real time, and if your head creeps up and starts creating drag, or your pace drops below target, you get an instant visual cue.
The FORM Smart Swim 2 Pro ($259) adds Gorilla Glass and fog resistance for anyone swimming daily; the LT ($149) strips the heart rate sensor but keeps HeadCoach, SwimStraight navigation, and structured workouts intact, according to FORM’s own comparison of the lineup. This is the one swimming tracker on this list that isn’t a watch at all, and for solo lap swimmers, that’s exactly why it works.
Best for: the swimmer who trains alone and needs a coach’s eye.
The Mid-Tier Data King
Garmin Forerunner 570
If you want the elite pacing analytics of the flagship Forerunner 970 but don’t want to spend top-dollar, this recent release is a pretty good compromise. It officially replaced the older mid-tier generations. Specific to swimming, the Forerunner 570 has a pared-down AMOLED screen with a lighter, thinner chassis. The high-contrast screen is still easy to read under water-spotted goggles.
So, how does Garmin Forerunner 570 drop lap time? It has Garmin’s Auto-Interval Detection and Critical Swim Speed (CSS) tracking. These allow it to separate your hard swimming from your wall-rest periods automatically. You get an exact breakdown of your true working pace compared to your active recovery time.
Best For: Intermediate to advanced swimmers who want elite, uncompromised lap-pacing software in a lightweight, budget-friendly profile.
What Else Do You Need Besides the Watch (or Goggles)?
The tracker gets you the data. It doesn’t get you the technique. If you’re serious about faster lap times, you also need a plan for what to do with the numbers you’re now collecting. That means either a structured training plan (MySwimPro and the FORM app both ship with these) or a Masters swim group where a real coach can sanity-check what your watch is telling you.
You’ll also want a way to actually see your data without stopping at the wall every length — that’s the entire point of the pacing alerts and AR overlays. And if you’re training for open water eventually, confirm your pick has an open water swim profile now (the Forerunner 170 does, the 70 doesn’t). That way, you’re not buying second device in six months.
Last thing: sync your watch to an app you’ll actually open. A tracker that logs perfect SWOLF data you never look at again isn’t going to make you faster. The habit of reviewing your set after practice is doing half the work.
Your First Move in the Pool
Don’t overhaul your whole training plan on day one. Wear the tracker for one normal set you already know well — same intervals, same rest — and just look at the trend line, not the single number. Check whether your DPS or stroke rate holds steady across the set or falls apart in the last third. That’s your actual weak point, and now you know exactly what to train next.