Best Fitness Trackers for Heart Rate of 2026

Two lines decide whether this is your tracker. The Galaxy Fit 3 pairs with Android phones only, and the version sold here is an international model with no US warranty behind it. If either is a dealbreaker, the Fitbit Air covers both. If you're on Android and can live without the warranty, we think this is the most watch you get for the least money in this group.

The display is a 1.6-inch AMOLED at 320 x 320, and it's the sharpest, most readable panel here — we had no trouble reading it outdoors, which isn't what we expected at this price. Around it sit 101+ workout modes with auto detection, sleep coaching with SpO2 and continuous heart rate, all feeding Samsung Health. Walks got picked up without us starting a workout, and pairing with a Samsung phone is the smoothest version of the experience; other Android brands work with a little more setup.

Samsung rates the 208 mAh battery at up to 14 days, and that's the ceiling rather than the promise — a bigger, brighter screen than anything else here is exactly why. There's no built-in GPS either, so outdoor runs use your phone's. Neither matters if you're tracking gym sessions, walks and sleep rather than marathon training, and the 5ATM plus IP68 rating means you can swim in it.

A five-gram band with no display sounds like a step backwards until you've slept in one. The Fitbit Air is a slim strip — 1.38 inches long, 5.07 grams — carrying an optical heart-rate sensor, red and infrared sensors for SpO2, a skin-temperature sensor, and a three-axis accelerometer with a gyroscope, and nothing on it that lights up. The appeal is what it does while you're ignoring it: a continuous heart-rate record through the day and the whole night, which is where resting heart rate and sleep scores actually come from.

We think that trade is the right one for most people shopping heart rate first. The band adjusts from 130 to 210 mm and swaps without tools, so the loop you sleep in doesn't have to be the one you sweat in, and at five grams you genuinely stop noticing it — the precondition for the 24-hour data you're after. It's water resistant to 50 meters, and rated for up to a week per charge with five minutes on the cable buying a full day.

Losing the screen costs you two things. You can't glance at your heart rate mid-set or check the time without reaching for your phone, and there's no built-in GPS, so outdoor runs borrow the phone's. Neither bothered us much, because the numbers a screen would show are in the app a minute later anyway, and that app works with Android 11 and up and iOS 16.4 and up — the widest compatibility in this group.

What keeps us coming back is the software. Resting heart rate, heart-rate zones, sleep stages and a daily readiness number sit in one place, the free tier covers what most people need, and the adaptive coaching is the part behind Premium. The bands are the other practical draw: switch to a knit or a sleep loop and one tracker covers a workout and a night without a second device.

WHOOP doesn't sell you a tracker so much as a year of membership that arrives with a device. The box holds the 5.0 band, a SuperKnit strap and a waterproof wireless PowerPack, and you pay for 12 months of Peak access to use any of it. That reframes the decision: you're not comparing hardware against hardware, you're deciding whether a year of recovery and strain analysis is worth committing to.

The hardware is deliberately quiet. No screen, a knit band, IP68, and a battery rated at 14 days that you top up from the PowerPack while it's still on your wrist — so the thing never has to come off. For sleep tracking in particular that's the whole game, because a tracker that spends the night on a charger is a tracker that misses nights.

What it measures runs well past heart rate: 140+ metrics including sleep stages, recovery, strain, and a Healthspan view of how your habits track against long-term health, with an AI coach turning the numbers into a suggestion. It's a lot of surface area, and it took us a while before any of it meant anything, which is the honest cost of this much data.

So: if you want to be told whether Thursday is a hard day or an easy one, nothing else here is close on depth, and the on-wrist charging makes 24/7 wear genuinely practical. If you mainly want steps, resting heart rate and a sleep score, you're paying for analysis you'll scroll past. And treat a bad recovery score as a prompt to check in with yourself rather than an instruction — the underlying readings aren't infallible.

The Air6's feature list is long. 120+ sport modes, heart rate, blood pressure and blood oxygen, sleep and cycle tracking, call and message notifications, a 1.52-inch screen, IP68 waterproofing. At this end of the market that reads like a typo, so the useful question isn't what's on the list — it's which parts you'll actually use and which are just checkboxes.

Our answer is that the boring parts carry it. Comfort is what this one does best: a 20 mm silicone band on a 1.12-ounce body that's easy to forget about overnight, which is exactly what you want from something meant to record sleep. It runs for days between charges and tops up in about two hours, and step, sleep and heart rate — the three things most people actually look at — come out fine.

Where it gets shaky is the fringe. Pairing is the recurring snag: it can take a couple of attempts, particularly on Android, before the app settles down. The LCD panel is a step behind the AMOLED screens elsewhere in this group — perfectly readable, just flatter and less sharp. And blood pressure and SpO2 belong in the trend bucket, not the measurement bucket. Two years of warranty is the reassurance that matters most at this price.

Battery life is what this one gets right. It runs about a week between charges and tops up quickly enough that you can do it while you're getting ready, and that matters more than it sounds — the tracker that stays on your wrist all night is the one that measures your resting heart rate properly. Charging is the routine that quietly ruins 24/7 tracking on cheaper devices, and this one avoids it.

The rest is a straightforward 1.47-inch colour touchscreen with 24/7 heart rate, blood oxygen and blood pressure, a 115-mode sport list, sleep tracking, call and message notifications, and a menstrual cycle reminder. The watch faces are better than the price suggests, the app is one of the easier ones to navigate at this end of the market, and the display is bright without being a battery hog.

We pick it over the Bakoor when a bigger screen and a three-year warranty matter more to you than an AMOLED panel, and it's the one we'd toss in a gym bag without worrying about it. Where we hesitate is longevity: there's very little history behind the brand, so treat the warranty as the safety net rather than a durability promise.

The Bakoor is the least expensive way to get an AMOLED screen in this group, and at 1.10 inches it feels more like a fitness band than a watch — which we count in its favor. The time, steps and heart rate are legible at a glance, the 25 sport modes cover walking, running and the gym, setup is short, and IP68 shrugs off sweat and rain. For someone buying their first tracker and unsure how much they'll use one, that's a sensible entry point.

What you give up sits behind the screen. There's no stated warranty, the readings are the least consistent part of the package — step totals in particular can drift when your hands are busy — and the companion app is basic rather than polished. None of that makes it a bad buy; it makes it the cheapest tracker here that does the visible things well and the invisible things adequately. If you want one device to last years, spend more.