Amazfit Helio Strap Fitness Tracker Wristband, 24/7 Activity & Sleep Tracker with Heart Rate, 10 Days Battery, 27 Sports Modes, Strength Training, Hyrox Race, Subscription Free for Android & iPhone

I purchased this as a sleep tracker only (when my fit-t died after less than a year and the company got acquired by the data-mining king). Then I realized I could use this instead of the Pol-r chest heart rate strap I was planning to get for my rowing machine, and that arm/wrist placement is way more convenient. Then I realized the app keeps improving and tracks a bunch of stuff including my workouts. I compared it to my friend's $pple device after a long hike and the stats were almost identical. Even food logging is so simple, you can speak your foods and it calculates calories and protein content fairly quickly and accurately, plus you can edit entries. Then I got into an argument with my sister and the thing started vibrating violently on my wrist (I didn’t even know it could vibrate) and I realized it was warning me my stress level was too high! So this thing is ending up to be FANTASTIC and way more useful than I thought. The only negative so far is that the strap it comes with is too large for me (I have tiny wrists and arms and could use it as a bicep band except it is non-stretchy so uncomfortable there), BUT it uses regular style watch bands (22mm) so that is another plus! Get whatever band you want. I love that this device is comfortable, lightweight, has good battery life and allows me to wear a regular watch (you know, the kind with an always on display that doesn't need nightly charging). With the added security of not tracking and selling data without my permission, no subscription and an affordable price i think this is a NEAR PERFECT fitness and bio tracker. (Please, Amazfit, don't let a bigger company buy or influence you and ruin this good thing you have going).

This Helio Strap is a great option if you like detailed training data but do not want another full smartwatch screen on your wrist. It tracks 24/7 heart rate, HRV, sleep stages, stress, and 27+ sports modes (including strength and HYROX) with second-by-second data, then turns it into clear recovery and training insights in the Zepp app—without any subscription. The strap is light, water‑resistant to 5 ATM, and gets up to about 10 days of battery life, so you can wear it day and night with very little charging or fuss

Overall, I’m very satisfied with this Amazfit band—it is extremely comfortable, barely noticeable on the wrist, and the companion app is accessible and user-friendly. The battery life is impressive, lasting me about 10–11 days, which included tracking two strength workouts and one run. While I knew beforehand that it lacks built-in GPS, the one significant downside is the inability to create structured running plans (based on heart rate, speed, etc.) within the app; even though it’s not a dedicated running watch, I expected to at least be able to run a plan via the phone, but that isn't possible. Despite that, it's a great device for general fitness tracking.

Updated review Jan 2026 - FYI battery life is excellent, usually 6-7 days before charging and best news is that it looks like the algorithm is self learning which is great. I can now wear on my wrist, it recognized workouts (identified as "activities") and is as accurate as my Garmin 55. Performance is now very similar if not equal to Whoop and Garmin. The App could use some updates but otherwise definitely a strong alternative to Whoop. Updated review - now 4 stars. Moving Helio Strap to bicep made a total difference. Would be a 4.5 if it worked for me on wrist. Original review Have been a Whooper for past 1.5 years, and based on reviews wanted to try Helio Strap. Have been wearing Whoop and Helio strap on same wrist for past 3 weeks and here are my observations. I also use a Garmin watch for training and Whoop and Garmin show very similar results from exercise. Pros: Battery Life - excellent, 8-10 days so far. Product Support - excellent - I contacted them twice by email and received responses within 24 hours Fit/Comfort - excellent Choice of alternative bands - excellent (many choices available on Amazon), picked up 4 for $10 versus the $20-50 choices for Whoop. A non-Whoop band fit but did not work for exercise or fast motion. Subscription - Excellent, as there is none!! Sleep Mode Detection - Excellent and very similar to Whoop results. App - Good, not as well laid out as Whoop and hopefully will continue to improve. Battery Charger - Good, except that the Helio Strap site does not indicate that the T-Rex chargers (2 for $10) will work. Whoop extra/replacement battery is $49. Cons: Activity/Exercise - Not good for multiple exercises chosen. I have tried manually starting activity (outdoor running) and tried non-GPS mode or switching it to treadmill. I did not measure the full workout. On advice of customer care, switched detection level to high, and it did detect running but did not end it when I finished. The calculations it made for the zones of heartrate were not correct and way off (too low). This is the one area that I hope company focuses on as Whoop definitely works flawlessly here. I will try GPS mode and also moving monitor to my upper arm and report back. Heartrate - accurate and same as Whoop. However calculations of heart zones during exercise way off (too low) Overall I still believe this is very good value for the money and will continue to use. I do hope they can address/improve the algorithms for exercise/activities.

I’m super happy with this purchase. I haven’t owned a Whoop band before, but this health strap does everything I could want and more. The battery life is insane, I get a little over a week on a single charge, which is a huge plus. The app is easy to use, and the connection between the strap and my phone is quick and seamless. It also has a very similar look to a Whoop band, which I like a lot. The only downside is that the charger is pretty small, so it could be easy to misplace. That said, if you keep it in a designated spot, it’s not really an issue. Overall, I’d definitely recommend this to anyone who doesn’t care about name brands and just wants a solid, reliable health strap.

Great value, with good information that seems pretty accurate based on other step counters, heart rate monitors, etc. Buy a bicep band and pair it with another amazfit watch.

Great fitness tracker. Step tracking is way lower than my existing samsung watch, but sleep tracking, heart rate and others work very well. The nice thing about it is that it does not have a digital display and you can optionally wear around your bicep (need to buy bicep strap separately) to make it less conspicuous.

I got this because I needed to ditch Fitbit before being forced to use a Google account with it. I've used a Fitbit for at least 5 years. Not for intentional exercise or smartphone features, but steps, heart rate and sleep tracking. Everything I was tracking with Fitbit lines up with the Amazfit strap. My heart rate is basically the same, steps and sleep tracking seems pretty good -- at least catching me awake vs asleep. On the sleep tracking part, this differs quite a bit from Fitbits in that Fitbit adds naps to your sleep for the day whereas Amazfit does not. Naps do increase your Biocharge, which seems to represent your energy levels throughout the day. Amazfit seems to catch naps quite well, though possibly a bit oversensitive. For example, if I put myself into a relaxed state and don't move, Amazfit may record that as a nap even if I may not be sleeping. I think the mobile app is solid, though I had a hard time getting it installed on my tablet -- said there was a compatibility issue (maybe it wasn't supported) and I had to use the apk to get the app. Like with Fitbit, you can install the app on a phone or tablet that you leave at home and it'll sync up your heart rate and steps when you get back to it hours or even days later. I don't know whether sleep data is stored long term yet (overnight) as I haven't tried it. The thing I most dislike about the Amazfit strap is the charger. It's about a 1"x1" by maybe 1/4" square unit. Easy to lose. I lost mine today. It's small and doesn't stick out. If you don't leave it attached to a USB cable, you can easily lose track of it. If you get one of these, you may want to consider getting an extra charger or two so you don't have a dead battery waiting for a replacement to arrive.