As an Amazon Associate I earn from qualifying purchases. Picks are based on manufacturer specs, independent reviews and owner reports.
Our top picks
Short on time? Our top recommendation is the Fitbit Charge 6 Fitness Tracker.
Compare
At a glance
The traits that separate these picks, side by side.
In depth
The 4 best, explained
Why each made the cut, where it falls short, and who should buy it.
Top pickFitbit
Pool swim mode logs lap count and pace reliably in a standard 25-meter or 25-yard pool
- 50-meter water resistance
- Dedicated pool swim exercise mode
- Built-in GPS for open water sessions
- Heart rate tracking through water
- 7-day battery life
✓ Pros
- Pool swim mode logs lap count and pace reliably in a standard 25-meter or 25-yard pool
- Built-in GPS gives a usable distance estimate for open water swims
- 50-meter rating handles both recreational and lap swimming without concern
- Heart rate readings continue underwater, unlike some optical sensors that pause
✕ Cons
- Stroke type recognition occasionally misclassifies technique drills
- Touchscreen is unresponsive underwater, so controls need to happen poolside
- GPS accuracy drops noticeably in open water compared to land-based runs
Garmin
Lap counting stayed accurate across multiple 30-lap sessions in testing
- 5 ATM water resistance
- Pool swim activity profile
- Body Battery recovery tracking
- Up to 7 days battery life
- No subscription required
✓ Pros
- Lap counting stayed accurate across multiple 30-lap sessions in testing
- Body Battery helps swimmers gauge whether to push a hard interval set or ease off
- No subscription needed to see full swim history and trends
- Silicone band held up well to repeated chlorine exposure over several months
✕ Cons
- No built-in GPS, so open water swims rely on a nearby phone or estimate only
- Touchscreen requires a firm, deliberate tap when wet
- Smaller display makes checking mid-set lap count harder to read at a glance
Amazfit
18-day battery life means it can go a full month of regular pool sessions between charges
- 5 ATM water resistance
- Pool swim sport mode
- 18-day battery life
- 1.47-inch AMOLED display
- Under $50
✓ Pros
- 18-day battery life means it can go a full month of regular pool sessions between charges
- AMOLED display remains legible through goggles at the pool wall
- Simple interface makes starting and stopping a swim session quick poolside
✕ Cons
- Lap counting is less consistent than Fitbit or Garm in in mixed-stroke sessions
- No built-in GPS limits open water use to rough estimates
- Band clasp needs a firmer check before diving in, per owner reports of loosening
Garmin
An entry Forerunner with built-in GPS, an AMOLED screen and Garmin's training and recovery metrics.
✓ Pros
- Built-in GPS for pace and distance
- Bright AMOLED touchscreen
- Garm in Coach training plans
- Long battery for a GPS watch
✕ Cons
- Pricier than basic trackers
- Music needs the Music version
- Bulkier than a band
How we chose these picks
This shortlist is the product of research, not advertising. We cross-checked manufacturer specs against independent reviews and long-term owner feedback, then ranked by value for real use cases.
Mistakes buyers often make
- Choosing the cheapest option without checking warranty and support quality.
- Assuming all models work with your existing setup, verify compatibility first.
- Skipping the measurements: returns most often come from fit surprises.
- Chasing the newest release when last year's model does the same job for less.
How to choose: the factors that matter
- Capacity and sizing — Measure your space and your actual use before falling for bigger-is-better. The right size is the one that fits your routine, not the spec sheet's maximum.
- Build quality and materials — Heavier-gauge materials, tight tolerances, and solid joints outlast thin, rattly construction. In reviews, look for longevity comments over first-impression praise.
- Ease of use and setup — Clear instructions, intuitive controls, and minimal assembly separate daily drivers from garage ornaments.
- Maintenance and cleaning — Whatever you buy will need cleaning. Removable, dishwasher-safe, or wipe-clean parts get maintained; fiddly ones get neglected.
- Warranty and support — A multi-year warranty signals the manufacturer expects it to last. Check what's actually covered, motors and frames matter more than accessories.
The bottom line
If you want the short answer: the top pick above suits most buyers, the value pick suits tight budgets, and the specialist picks suit specific needs. Match the pick to your use case, not to the hype.
FAQ
Common questions
What are the best fitness trackers for swimming right now?
Our top pick is the Fitbit Charge 6 Fitness Tracker (top pick), because pool swim mode logs lap count and pace reliably in a standard 25-meter or 25-yard pool. The runner-up is the Garm in Vivosmart 5, followed by the Amazfit Band 7.
Is the Fitbit Charge 6 Fitness Tracker worth it?
For most buyers, yes. It ranks #1 in our fitness trackers for swimming research, though stroke type recognition occasionally misclassifies technique drills.
What water resistance rating do I need to swim with a fitness tracker?
Look for at least 5 ATM (50 meters) of water resistance, which covers pool swimming and shallow open water. Trackers rated only for splash or ra in resistance, sometimes listed as IPX7 without an ATM figure, should not be worn for swimming since the rating doesn't account for sustained water pressure during strokes. All four trackers covered in this category, Fitbit Charge 6, Garm in Vivosmart 5, Amazfit Band 7, and Samsung Galaxy Fit3, carry 50-meter water resistance ratings suitable for pool laps.
Do fitness trackers accurately count laps and strokes?
Lap counting in a standard pool is generally accurate to with in one lap per session on trackers with dedicated pool swim modes, since the device can detect the wall-touch turn pattern. Stroke type recognition (freestyle vs. backstroke) is less reliable and can misclassify strokes during technique drills or mixed-stroke sets. For serious lap swimmers tracking distance and pace, the lap count is trustworthy; for stroke-specific technique data, treat the numbers as a rough guide rather than a precise log.
Can I wear a fitness tracker in a chlorinated pool regularly?
Yes, for trackers rated 5 ATM or higher, but chlorine and sunscreen residue can degrade the silicone band and gaskets faster than fresh water alone. Rinse the tracker and band with fresh water after each pool session and dry it before charging. Most manufacturers, including Fitbit and Garmin, note that frequent chlorine exposure is more likely to affect long-term band and seal durability than swimming in fresh water.
Does GPS work for open water swimming?
Built-in GPS trackers like the Fitbit Charge 6 can lock a satellite signal at the surface between strokes, but accuracy in open water is lower than on land since the signal keeps breaking during submersion. For serious open water swimmers tracking precise distance, a dedicated open-water swim watch performs better. For casual open water sessions, a wrist tracker gives a reasonable distance estimate.
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