Samsung Galaxy Fit2 Science Test: Watch Before You Buy! (2021 Review)

[@ml3141]

Rob, you have just confirmed what I have been suspecting is the mistakes that my Samsung Gear S2 have been making these past couple of years I have been wearing it. Thank you so much!!! It is consistently slightly undercounting my steps whenever I compare it to manually counting a few hundred steps. My heart rate also was many times off compared to manual counting it. yet I was not capable of testing and plotting it so precisely and brilliantly as you have. sleep also never seemed right to me but I had no way of testing it. How I can see that it is making the same mistakes as your Samsung wearable. You are brilliant and publishing on this KZbin channel such greatly needed work! Thank you again, and keep up your great work! 👍👏👏👏

[@TheQuantifiedScientist]

Thanks so much Mike!

[@garluis23]

I wait religiously for your videos, they're so good right now.

[@TheQuantifiedScientist]

Thanks so much Garluis!!

[@HunterHamster97]

Great video! Im a bit dissappointed that the fit2 performed so poorly. Can you do a "1 year later followup" on it? Maybe the software improved some of its capabilities. Keep up the good work!

[@kamaboko1]

I'm waiting for the "OH MY GOD...this is the best fitness watch ever! It's exceptional! Everything was within 98% accuracy. Buy it NOW!" review. Sadly, that will never happen. Every watch no matter the price has its shortcomings. We are many many years away from serious contenders. To be expected as we're in the infancy stage of smart watches.

[@cinemapigeon4898]

@Hani A Yeah, after watching a bunch of his reviews, fitbit looks pretty good, definitely very good sleep tracking. If he ever did a best watches list, fitbits would be all on it.

[@gliderman9302]

Get a garmin or Apple Watch

[@hornsteinhof7592]

@@cinemapigeon4898 I feel like it's only true for sleep tracking. Heart rate is still kind of odd

[@__aceofspades]

Would love to see the Samsung Galaxy active 2 next!! Its gotten pretty cheap these days like $100 in the US, has blood pressure, HR, EKG (might need to sideload an app, as im not sure if its passed EU regulations)

[@SamEfDee]

Waiting for this too. Might upgrade my Mi Band 5 if its metrics are better.

[@vlkhvan]

Glad I found this channel. Finally, someone does review differently. Really enjoyed it. And decided to go with Fitbit

[@_baert]

I just decided to ditch Fitbit. Their product is defective but because it happened after 1 year their said oh well not our problem.

[@flavioribeiro6784]

Sheesh. I wish you already had tested this 3 months ago when I bought one for my gf. This device is actually pretty good as a light version of a smart watch, since it is pretty good with notifications and detects when you exercise. The Samsung app also has some pretty good training programs. But the measurements accuracy is pretty bad. Thanks a lot, and I like your step by step approach. It's just like you are presenting a scientific article in a congress. I can learn about the devices and learn about presenting methods. Wish you lots of success

[@TheQuantifiedScientist]

Thanks so much Flavio!

[@kareemhijazy3428]

1st time watcher, very high quality video. wish you had included a caloric comparison

[@lgnfve]

Strange, Fitbit did horrible for me but fit2 has helped me improve my sleep dramatically . I guess mileage may vary lol. I plan to get the apple watch when new one is released. I could not recommend the Samsung Galaxy Fit2 enough. they are both so inexpensive, easy to buy both to try. thank you for all your hard work and data. looking forward to further reviews.

[@deeonis]

Thanks for great video. According the user manual Fit 2 has slight delay in step counting. It doesn't count steps immediately. In such way, i guess the step test results should look a bit different.

[@TheQuantifiedScientist]

Hi V A, thanks for in info! Not sure if this had an influence. Since I did these segments mostly back to back, the numbers should in total not be affected too much, but it might have some influence indeed.

[@ralstondias4779]

please make a video for newly launched fit3 aswell and love ur videos

[@sandeept_soul]

Awaiting your review of Samsung Fit3😊

[@samygold100]

Man, would you please recommend the best most accurate sleep tracker among all you tested?

[@---GOD---]

This is all I want

[@LaChrysomeleReveuse]

I'm looking for the same thing. Rob, what had been the most accurate device so far, please?

[@cinemapigeon4898]

Fitbits all track sleep pretty well.

[@romantrochanowski6107]

You have inspired me to dig out my Zeo Sleep Manager EEG which I was able to pick up really cheap many years ago. I want to compare the sleep accuracy of my Garmin Vivoactive 3. Love your channel! (Too bad about all the bad press on Scan Watch).

[@RomainCavallini]

Hey hey ! Loved the video ! For the heart rate "dot comparison " (first HR graph), it would be cool to have the standard deviation relative to the polar ! That would give a good comparison data against others !

[@upsetuloss]

Thanks for saving me money. I'll be going with the Fitbit Inspire 2 per your recommendation.👌🏾

[@haleyishuman]

Thank you for providing such high quality, quantitative reviews. I imagine it takes you a lot of time to do these :)

[@MrSarvie94]

Hey Rob, what are your thoughts on the Samsung Galaxy Fit 3 watch that was launched recently?

Great review. I am also not satisfied with it, mostly due to software (un)friendliness with iOS. However, I did notices that HR heavily depends on the position on the hand. The more it is closer to the wrist it is better. Also, the sensor it uses for HR is completely different then most of other wristbands, due to which it has measurement inertia, and all other issues that come with it. Try repeat some of these tests with the band closer to the wrist. Additionally, even if it can be easily removed from the band, it performs poorly when it is in the pocket, e.g. as a step counter.

[@karthickvelushamy]

Please do fit 3 review

[@reaper7427]

What does REM mean? This is the first video I'm watching of yours, and I am pleased!

[@Cornsnake94]

Rapid Eye Movement, you move your eyes quite much in that phase. You also often dream in the REM-phase ^^

[@fridaphonebackup6599]

Hi Rob! Thank you so much for your hardwork on this video! Too bad I didnt watch this video sooner before getting one last year Dec 2022. Def will be checking out your other videos to decide on my future health tracking device purchase!

[@PhynixAbyss]

Conclusion: The 30€ Fitness Tracker did not perform like an 100-200€ Fitness Tracker. I can not recommend it.

[@terrytibs3365]

Could you make an updated video of this watch

[@yashwanthkumar4043]

do a video on fit 3 now please!

[@billl1977]

We want a video about the amazfit GTS 2

[@stephanienel3161]

You are THE BEST. Thank you for your highly detailed, unbiased reviews

[@sergiutelbisz1955]

I have a Samsung Active 2 and can confirm that it shows me way more awake time than I have. There are nights in which I barely wake up and it gives me like 1h and something of awake. And usually way less deep than I surely have.

[@TheQuantifiedScientist]

Thanks for confirming my results Sergiu!

[@RockSleeper]

this video is on the Fit 2, not the Active 2. Did you mean fit 2? if not, how did you do your tests on the Active 2? I just ordered the Active 2 and now I'm worried if I should have gotten something else.

[@sergiutelbisz1955]

True. What I was saying is that I think the Active 2 is not very different from this Samsung product. I think basicaly they have the same sensors. My results are purely subjective, from the day to day data I saw being registered and how my body felt. Indeed I do hope Robb tests it. From what I can tell, sleepwise is that it is very good in predicting when I sleep and when I wake up but also it shows many small awake moments during night time that sometimes add up to even 1 h. And the fact is I hardly wake up during the night. I really have no sleep problems. Also sometimes I think it shows too little deep sleep. I have periods when I sleep without any movement at 49-50 heart rate and no deep sleep whatsoever. Usually it only shows like 20 ish minutes. REM wise I think it is ok. I mean in the morning if I felt that I had a really rough dream night it does indeed show more REM than usuall. I think it is a good Samsung product especially if you have a Samsung phone. I use it every day since May 2020. It is just regarding sleep that I have my doubts. I thing the algorithm might be the problem. Usually after an update it appears to shift the results a little. But hey, hope you enjoy yours and report back if you had good results. And Robb, please please test it.

[@MrBogdan998]

@@sergiutelbisz1955 I have a Galaxy Watch3 and I can confirm that, in comparison to Mi Band 5, which I had before Watch3, it tracks sleep poorly regarding awake time and deep sleep time. Of course I cannot say for sure about light sleep and REM because I have no way of testing it. When ti comes to steps, I would say that the Watch3 tracks a little bit more accurately since it shows every step that i make when walking, unlike Mi Band 5 which delays step counting for several seconds and then adds 20, 30 or 50 steps to the tally which is harder to track in my opinion. That could be due to the built-in GPS in the Watch3, whereas Mi Band 5 is using your phone GPS, but I'm definately not sure about that. I am trying to be as active as possible since I was diagnosed with anxiety and panic attacks and I go for walks/runs every night before sleep, and both devices show distinct change in heart rate when I start jogging or running with the HR going from 100-110 to 160-170 bpm, so I'm not sure how accurate it is regarding the actual heart rate, but I can confirm that both show general accuracy. *A note to Mi Band 5 - there were two occasions when I would stop running and begin walking, expecting the HR to go down, but it continued going up all the way to 196 bpm which was insane, I didn't even think my heart can go that much, so there were two inaccuracies in 3 months of using. None so far with the Watch3.

[@MrTherickz]

Great video as always. I hope you can one day do a review of a those cheap chinese no-name sleep/ecg/temp/ox/hr/activity watches you can buy from aliexpress or banggood for 20-50 usd, would be really interesting to how they compare to the big brands.

[@Michael-qv7pn]

I got it, it was 33 euros i think for that price its good alltough it didnt perform that awesome in your test

[@mohamedfarh7280]

I am really happy finding this channel. Thanks for your dedicated reviews and to see a one for galaxy active2 in the future.

[@ensiangtan]

Thanks to you I got my first fitness watch, your vids r straight to the point and save people time, sub and liked! :D

[@orangutanklaus9285]

Which do you buy?

[@enraha123]

Thanks a lot Rob. Love your reviews! Have a great week ahead

[@TheQuantifiedScientist]

Thanks Xavier! You too!

[@tommiel6740]

Thanks Rob ! Could you do more Apple Watch apps and/or Garmin Fenix? (The sleep tracking that is)

[@sanif]

Hey Quantified scientist, I love your reviews and love that you care so much about the health and fitness sector. Can you please do a review on breathing training equipments like the airofit etc? That would be amazing, they are expensive hence knowing whether they work or not will really help make a purchase decision.

[@HawkArmy]

How about Samsung Galaxy Active 2? Would love to see more Samsung products.

[@Gengh13]

Wow, that's really bad, this is the reason we need comprehensive reviewers as you.

[@TheQuantifiedScientist]

Really appreciate the compliment!😊

[@superscoregames465]

i have a fit2 and its good who cares about stupid sleep why does it matter and it has the best features

[@ShadowSwitch777]

Great Review! I appreciate these types of vids. Can you do one for the Galaxy Watch 3?

[@RockSleeper]

Please test the Galaxy Active 2, and do you have a list rating the different smartwatches/trackers you've tested?

[@ChipAndCrinkle]

Sunday afternoon means Quantified Scientist time - can never arrive soon enough!

[@TheQuantifiedScientist]

Thanks so much😊

[@fernandoalvarez2846]

Hello! Really enjoy all your videos! I purchased the Inspire 2 thanks to you!!! Just had a quick question in the fitbit dashboard settings for my device, I notice that my fitbit is toggled to have sleep sensitivity to normal, was wondering whether you had it on normal or did you select sensitive when performing the studies that you did for your of your inspire 2 video.

[@rjtechcity9039]

I am interested in buying emf radiation free smartwatch. Please recommend one with all the features like step counter, HR monitoring, SPo2, BP monitoring, etc.

[@RafaGmod]

Came to see where samsung was ni the fit 2 as the fit 3 just released! And boy, they have a long road to make me upgrade my mi band 6 hahahaha

[@NY-oz5le]

Great Video! Im wondering if the more expensive smartwatches from samsung have te same sleep tracking issues. Would love to see review of the galaxy watch 3 if you are able to get your hands on it. Would also like to see if you are able to measure the relative accuracy of of spo2 and the bloodpressure functions that the galaxy watch 3 offers. Keep up the good work!

[@TheQuantifiedScientist]

Thanks! For sure, I hope to test it soon. (If someone can convince Samsung to send me one for testing that would be even better ;-) )

[@adaninurs]

1 year later follow up for this please!!

[@siddharthapochin7511]

Your videos are so helpful. Thanks for taking the time to produce these :)

[@joshua8292]

Incredible content! Thank you.

[@ravnitdeshpande]

which fitness band you would recommend in 3000 Indian rupees ???

[@AlokKumar-ym8bl]

You explanation is very scientific and clear, please keep presenting videos like this, thank you, God bless you gentlemen...

[@sarathbabu1072]

I recently found your channel bro.. and the content is just wow.. Accuracy is more important thn a feature. Ig.. it's due to the code it performs worse in sleep test.. I found similarities in tht visual like it's detected most remp sleep as wake... So, I guess the way tuned is differed like in terms of accuracy thing... Anyway it's really great work bruh

[@threestars9788]

Can you post video on honor band 5 ,as it seems to have more accurate results !

[@floradu2001]

Can you make Samsung galaxy fit 3?👀. Thank you, excellent review!

[@user-tx6he5jh6w]

nice video! so underrated !

[@cutiedizzle]

Love you honesty

[@cpnd]

So what I am going to do is get Samsung fitbit 2 for the step under count because it will help me push myself. I prefer a slight under count than over count anyday. And I'll get the POLAR H10 for the heart rate. And that's all I want.

[@STeyo-bo4jt]

Useful information ,as always. Nice review sir

[@TheQuantifiedScientist]

Glad it was helpful!

[@mishkattasdid]

actual review of electronic devices,. Thanks man,.

[@milkshakekoe]

kun je misschien een sleep tracking test doen van de galaxy active 2? :)

[@TimPloumen]

Heb hetzelfde verzoek 😉

[@TheQuantifiedScientist]

Hi Pyke! Ik hoop die ook te kunnen testen 😊! De beperkingen tot nu toe zijn (1) geld en (2) tijd. Ik koop bijna al mijn apparaten zelf, en daarnaast werk ik voor mijn "echte" werk ook zo'n 50 uur in de week (als t niet meer is). Dus hopelijk heb ik ondanks (1) en (2) de mogelijkheid deze te testen.

[@guilherme_louzada]

Great video. Congrats!

[@JoaoVitorBRgomes]

Boa review, gosto muito dos seus vídeos!

[@TheQuantifiedScientist]

Muito obrigado! (#googletranslate) ;-)

[@DBLCreations]

I used the Samsung Galaxy fit 2 specifically for my heart rate measurement. (And it was set up to be continues.) Not sure why but that part of the watch for me was completely accurate. I tested the watch with different devices. From a hospital device (that measures saturation and heartbeat) to the people from the ambulances who had their own measurement tools. Even manually, the Galaxy fit 2 was very accurate. I believe i had 2 or 3 times where it had a couple of heartbeats wrong. But the point for me is that, let's say the watch displays 155, and it's 5 beats off, i know there is something wrong. I've had leukemia in 2009 and been through a lot already when it comes to my medical path and i know my body pretty well (after more than 15yrs. in and out of the hospital.) So i would say, if you are looking for a "cheap" watch for heartbeat/rate measuring, i think you will be good with the Galaxy Fit 2. I can't say anything about the sleep because i don't really use that feature and if your measurements show inconsistencies about REM sleep i completely believe you! 🙂 I'm going to watch a couple more of your video's. Very enjoyable to watch!

[@nicklashjort5797]

Hello Rob. Im really looking for a solid sleep/general health tracker and been watching your videos. Which one would you personally say is the Best?. Agter seeing your review it seems to be the fitbit inspire 2 that is the winner???

[@restytamayo3984]

nice video...thanks...now i know what is the right band watch to buy...👌👌👌👍👍👍

[@andyweb7779]

Can any of the Fitbit gadgets give you a vibration alarm during specific types of sleep to aid lucid dreaming etc?

[@infinites8294]

When you use the fit, I think it helps if you shave the hair on your wrist where you put the watch

[@TheQuantifiedScientist]

Thanks for the tip. However, not sure if the average consumer will go that far for a wearable ;-)

[@aloyafrica3080]

Excellent review 👌

[@bongthoi1]

I bought this for £33 which is $45 and the original price was 60 so i guess this is a good watch? I would get the Fitbit inspire 2 if it was on sale so thank you for the recommendation

[@davidsk8forjesus]

Galaxy watch active 2! I would love to see a video with that one

[@JV-yh9dx]

Bro... Also do blood pressure monitor.... 💙

[@ave_rie]

Great video! After this, I’ll refer to your Xiaomi video to compare and decide :)

[@ken_barbe]

Love this video! Thank u so much 😀

[@jamesheseltine8283]

Hello! I am a big fan of your KZbin channel. I literally live right by a train line that is quite loud. I am still able to sleep 8 hours a night no problem. But is it possible that the quality of my sleep is being negatively affected without my realising it? Thanks for all you do. James.

[@nil1874]

Good Video sir, is there any update out for the FitBit Sense?

[@TheQuantifiedScientist]

Hi Nils! Not yet, but hopefully I'll have time to make a video or instagram post about it soon😊

[@damnoish]

Do you have any idea why the apple watch is significantly better at tracking heart rate than other bands - even in case of high intensity workouts? Or what prevents the cheaper alternatives from reading the correct values when bpm shoots up quickly? I'm trying to understand if it's really technically hard to do or just manufacturers cheaping out. From what I've seen in your channel, even the costlier Garmin watches have abysmal hr tracking when it comes to hiit workouts. One more question: how do you export data from these apps? Thanks for doing all of this.

[@yngg2947]

could you please do a test on latest Miband 6 and huawei band 6 for their sleep, heart rate, blood o2 level and step count test? very interested in that

[@SuperFred001]

As an unscientific fool I liked the video easy to understand and this test is something nobody else does

[@enhncr]

Good job. What about galaxy watch 3 sleeping tracker? Can you test it please:)?

[@berkyasuk9188]

Great detailed review! But I'm little confused that how can I (or you) measure sleep onset latency? Most of my graphs start with sleep onset (when I already fall asleep), like one of your recordings. So, I wonder that how can I calculate exactly to time spent in bed before sleep onset with using only Fit 2 graphs as base?

[@trawazmazur]

Great channel, pure data to compare. So I have to look for other device.

[@yourkodi3945]

what do you recoomend for heart rate monitor?, which was is best for android users?

[@Ceci-db8kh]

even though I'm a samsung user I wish the fitbit was the same price as the samsung one but that isn't the case in my country. The fit bit inspire 2 is more than twice the price here...

[@georgesabikhalil186]

Good job as usual !!

[@SportsOrchestra4420]

Please do this test with galaxy watch 3 & Active 2

[@paralipomeni100]

Please, tell us something about Garmin Vivosmart 4! How accurate is it? I'm referring to sleep tracking and heart rate accuracy. Thanks a lot!

[@jevremjevtic793]

Keep going your great man!!!

[@KA-cm9px]

it would be very good if you created a table in excel, for example, compiling all smartwaches that you have already tested for us, so we could consult and verify this data :D

[@benjmiester]

I want to replace my Honor Magic Watch 2, but it looks like nothing else that looks as good, works any good. I was hoping this would be the one.

[@dsr8076]

Hello Rob, does Fit 2 has Low Heart Rate alerts? Thanks for other’s informations.

[@Bt-ik9xp]

Sorry for the off topic question but on what sleep sensitivity did you test the fitbit sense 2? Normal or sensitive? I use it but can‘t really tell if it‘s really accurate.

[@TheQuantifiedScientist]

Hi! I have it set to the default settings :-) . I normally try to not change anything, since most consumers will also not know and/or bother ;-)

[@Bt-ik9xp]

@@TheQuantifiedScientist thanks a lot you really helped me out

[@andrewpradana2812]

Hi rob, galaxy fit2 around 38 usd and fitbit inspire around 90 usd,, can you please advise that fitbit can justify this price difference? Thank you

[@NeverStoppedSinging]

thank you so much

[@a-40arpitmecwan56]

Can u tell which is best accurate Smart band and smart watches under 15000.INR

[@warryn4751]

Can we see a video on the samsung active 2 and galaxy 3

[@KhanhNguyen-is2vg]

Can I have your opinion between this and mi band 5???

[@WOUUUTT]

Which tracker do you recommend for android users (& heartrate)

[@jklm577]

Plz one on honor band 6 if possible

[@TheQuantifiedScientist]

Hi! Yes, I am testing it as we speak :-)

[@jklm577]

@@TheQuantifiedScientist thanks brother

[@francescoosato523]

When galaxy watch 3?

[@TheQuantifiedScientist]

Hi Francesco, when time and my Wallet allow it ;-)

[@francescoosato523]

@@TheQuantifiedScientist 😂😂😂

[@santunaik1499]

❤️ from India, please do latest test of this band. Curious to know about its performance after so many firmware updates. Please Sir...

[@lukeItsAmeMArio]

i was looking for a cheap small fitness tracker for playing sport no fitbit because of the price i will break it really fast, almost buy fit 2 untill i saw this test, that price for this accuracy is totally not worth it, now just order amazfit band 5, cheaper and more accurate than this.

[@awananonano2602]

Please test the newest mi watch 😍