Fitbit Inspire 3 : Full Scientific Review

[@TheQuantifiedScientist]

🔴 General Amazon link*: geni.us/thequantifiedscientist 🔴 Fitbit Inspire 3*: geni.us/Fitbit_Inspire3 🟢 Instagram: instagram.com/quantified_scientist/ 🟠 Shorts: studio.kzbin.info/door/cpARGzXNaC62UQWns2dh2Q 🔵 Newsletter: www.robterhorst.com 🟡 Twitter: @QuantifiedRob * Affiliate (paid) links support the channel by earning me a commission on any sale, and it doesn't cost you any more! My opinions are completely my own, and this content is not sponsored. ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 👇 $30 off any new WHOOP membership, affiliate* (paid) link, supports the channel!👇 join.whoop.com/QuantifiedScientist ($30 off any new WHOOP membership)

[@alessandrolanfranchi5913]

Can you test the Verity sense??

[@lj9656]

Can you test the new updated algorithm of Oura ring 3?

[@ParbodhCBali]

Hi, Qualified Scientist, what do you recommend as best watch /band per value for money. Not needing luxury or status concerned product. would be highly obliged

[@felixbrandau4751]

The only one who compares the watches seriously

[@incurab1e]

I agree. This guy gives proper fit tracking reviews. 😮💪🏻

[@TheQuantifiedScientist]

Thanks so much Felix!!

[@PRTube01]

Which one have the best battery life?

[@richardfert3908]

That’s true, he helped me a lot !

[@haythemkarchoud5986]

Good freaking job man ! As a data scientist I always struggle with reviews that are not backed up by data and are too subjective. This just hits the spot for me !

[@al_x_ander]

Thanks!

[@TheQuantifiedScientist]

You bet Alex, thanks a lot :-) !

[@chrispaulin1482]

Subsribed, never seen a reviewer as competent as you. Your work is appreciated.

[@khreon27]

this is one of the most thorough analysis videos I've ever came across. great job man

[@tnjar]

THANK YOU! Your content is great, and this video is exactly what I was searching for. The comparison chart of all the tested products is more helpful than I know how to say. Thanks again man.

[@DJTwinky]

This video is amazing! The amount of depth & research put into testing and production is the most useful review I've seen from so many 'wearable' videos bar none. I'm happy to discover this channel as an alternative to click-bait-y KZbinrs merely regurgitating the product specs. Bravo!

[@humanmale6424]

Bought it in October and had to return due to screen touch error (it kept manipulating on the screen itself). However, I highly appreciate its ability to track sleep - super accurate every time I wake up in the middle of the night or wake up in the morning.

[@zeehont6159]

Yess was waiting for this review :)

[@TheQuantifiedScientist]

Happy to help!😊

[@nicolasc-m8139]

Hi Rob, Thanks a lot for all these tests, videos, advice and comparaisons. It is a huge and great job that you make for your community and anyone who is looking for objective datas. I post here in the last video I found for ask if you have plan to test the last creation of withings (the body scan). Yes it is not a watch but, like you did the sleep analyzer I thought that could be in your plan ;^p.

[@PamWD]

Great information! An interesting thing I found for when Inspire 3 counts steps when it shouldn't---when ringing handbells! Obviously, not something that the majority of people do, but when I am rehearsing handbell ringing, it definitely counts that as steps. Originally discovered this by accident when the "you've reached your step goal" notification went off close to the end of a rehearsal (we stand at a table when ringing, so no walking around). But it does not count steps when pushing a cart around the grocery store, so I figure it sort of evens out!

[@lozovic]

Best and only fitness tracker channel worth watching... in my humble opinion

[@TheQuantifiedScientist]

Thanks a lot!!😊

[@Juanjo191]

Amazing video as always. I just bought my Inspire 3 a week ago and I am super happy with its performance. I can’t put it in numbers like the video, but I believe that the heart rate monitor is accurate enough for spinning and doing some exercise at home. I do believe that i counts more steps, but overall I’m happy with the performance. The app shows a lot of information (even without the premium subscription) and I find it very helpful as a health tracker over all

[@TheQuantifiedScientist]

Happy to help!😊

[@solodolo6018]

I have it and it definitely counts extra step. I can swing my arm back and forth and it will count this as steps.

[@televizorfan-pz1yq]

May I ask which version of Android you are using? (My favorite device runs 8.1, so the app can be installed but not updated. So I wonder about compatibility...)

[@HarshDivecha_FTR]

@@TheQuantifiedScientist Which one would you recommend for sleep ? inspire or charge ?

[@kanakraj3198]

Best Review, data backed, graphs, comparison, correlation! As a Data Science Research person couldn't have asked for more!

[@dutchdude7180]

Thank you for the great review! Ordered one last week and I am wearing it now 😊

[@jakeplays1606]

Such a good informative video, well done mate!

[@felipecirne]

Thanks for the reviews

[@TheQuantifiedScientist]

You are more than welcome Felipe!!😊

[@mehmetaliyurtofficial]

I wish I could discover your channel before my purchase, I would definitely go for this Fitbit device. Next time hopefully 😅

[@Skinnychelle48]

Which did ur purchase?

[@jean-christophe281]

Hi ! Congratulations for your awesome work!! What about SPO2 measure of this watch? Do you recommend for this measure?

[@Ghillieye]

This was an amazing video! I really appreciate the data-driven approach you take comparing both to the industry gold-standard and across the industry as a whole. I wish you also compared Sp02 as well! Maybe next time =)

[@Babak7712]

Thank you for this great review.

[@TheQuantifiedScientist]

Happy to help!😊

[@jonathag2000]

Absolutely love your videos! Right up there with DC rainmaker which is high praise

[@valarmorghulis3773]

WOW! Not some generic azz review and you actually tested things you earned a follow and a like my friend❤ Is there a step tracker you recommend?

[@iGp0wn3d]

I am just interested in a good sleep tracker... Oura and Whoop is to expensive... Then i thought lets go for a one time purchase Fenix 7 or Venu 2 Plus since they have multiple other sports-features i would like to have. However with a fenix I can't sleep anyway. May based on those accuracy tests i just buy the fitbit inspire 3 for sleep tracking. Good idea with bang for the bucket?

[@mfahlers]

To produce the best of any product is an amazing feat. Your videos are the best in this area.

[@KSMP]

Is the sleep tracking on the 3 an improvement over the 2? That's all I want to use a Fitbit for and if I get the same performance from the 2 I'd rather get it and save a bit of money.

[@CrasyFingers]

omg my watch finally thanks!

[@TheQuantifiedScientist]

Thanks Crasy Fingers!!

[@Pradeesh...13]

Thanks you sooooooooo much, i have been waiting for this video for 3 months. U r awesome 👌

[@KrishanSharma-hk3zv]

Another excellent review keep up the great work mate 👍

[@iuryt]

Nice video. A suggestion I have is that you present the comparison data as a heatmap instead of points, since they easily get cluttered.

[@benjaminkunze8903]

You are doing an insane Job. Thank you, appreciate it

[@gsadventures678]

All hail Rob! Just bought my Fitbit Inspire 3 today!

[@vsg9944]

Same bro. Display is quite awesome

[@Mehwhatevr]

I’m always curious about if you flip the chart. Instead of how much the eeg deep sleep was detected by the Fitbit, whoop, etc. how much of the deep sleep detected by the Fitbit is considered deep by the eeg. I’m not the phd candidate here, so I’m just wondering. It seemed like it might be at least equally useful but maybe more interesting. Current chart: how much of this phase does the device correctly detect? it detected 75% of the deep sleep Chart flipped: how poorly does the device detect this phase? 50% of the detected deep sleep was wrong Again I might be wrong, would be interesting to know why you set the chart the way you do because I’m not sure if it’s more useful to know that it does recognize when you’re in deep sleep with a small percentage of false negatives or if it’s more useful to know that it does detect deep sleep with a lot of false positives. Something about it, I lean towards looking at my watch data and asking how much of the deep sleep is actually deep sleep rather than did it catch all of the deep sleep? Of course this wouldn’t be the complete picture either. If you made it through my incoherent rambling this far, I would like to see both charts. Including the scatterplot. I think it would be interesting.

[@TheQuantifiedScientist]

Hi! That makes complete sense, and I will consider it :-)! Might be interesting to show these two average values on both axis of my plots. Showing both in a video on detail might be a bit too much for people ;-) 😊

[@Mehwhatevr]

@@TheQuantifiedScientist I agree with you that both might be a bit much. I'm not entirely sure which one is more useful or if it is best to display them on one chart. I think your scatterplot makes sense. I'm not sure how you would show the two averages on the plot, that chart might be a bit confusing. I'm trying to understand myself what it might mean. Might be better to keep things the way they are. 😂 right now it is the average of the percent of "true" positives vs the lowest percent of "true" positive for the 4 stages. Did I say that correctly? The alternative you suggested would be the average of the the percent of true positives vs the average percent of false positives? so if 70% of deep sleep is labeled deep sleep, 80% of light sleep, 60% of REM, and 70% of wakefulness. one axis would have 70% But if 50% of what the watch called deep sleep was wrong, 10% of the watch's light sleep was wrong, etc. then you would take the average of those and put them on the other axis? I don't know if I have this correct, but it might be too confusing to do it this way without showing the data that led to it. Might be better just to keep doing things the way you're doing them? I'm really working hard to not cross the line into telling you how to do your job because I really don't know, I'm just being curious. Please don't make any changes unless you believe in them. maybe a link to a second chart in the video details for myself and the 4 people who upvoted my comment 😂

[@okaynow9030]

great job man

[@elirhm5926]

Thanks man! You saved a lot of my time❤

[@CaptainJonathan]

I finally gave in and bought a Versa 4. It's not perfect, but since I won't go Apple, there's not much choice. We'll see how it goes. Thank you for the informative videos!

[@strider-pubgmobile757]

Throwing your money away

[@micahjohnson9184]

Try a Whoop strap! that's what I'm planning to get since it has 12 months free when you first purchase it and rob regards it to be pretty accurate overall for everything. Although if I did get a Fitbit the inspire 3 would be the one. Especially after having the inspire 2 it was great.

[@micahjohnson9184]

@@PietriGuitars Yes, like I said the first 12 months are free and after that I can just pay the annual fee to see the data all year long. Rob recommends it for overall health tracking because it gives accurate and reliable data on top of giving great suggestions for improving your health which is intuitive, more so than many health and fitness trackers. Doesn't matter to me as long as the data is accurate my health matters more. If it helps me stay healthier in the long run personally I'm fine with it. It's one of the best recommendations for people that don't have Apple devices or want them and Apple only works with Apple so yeah. At the very least you won't be throwing away that same amount of money on a cheap fitness tracker there are only a few reliable ones out there and they're either really good at one thing and very poor/ mediocre in another. Highly likely they're bad in both the cheaper you get.

[@wayoonpimdee8295]

Thank you for the information about the Fitbit Inspire 3. After watching this video, I clicked to order immediately.

[@callmesenpai9717]

I really like your videos ! Can you please review the GTS4 / GTS4 mini please !

[@zakialbetiyan449]

Can't wait for the GTR4 review

[@extraordinaryhuman1806]

best review i have ever seen on youtube

[@Nicke_FIN]

Thank you for doing these informative videos! Are you planning on doing a review of the new polar ignite 3 watch?

[@papermachete0]

wow, amazing vid!

[@abysstec]

What sleep sensitivity did you set for the test: normal or sensitive? And which one do you recommend for accuracy?

[@MarkMcPhillips-q1i]

I'm interested in this too.

[@smh457]

Good question. Which one do you use, if you have the Fitbit?

[@abysstec]

@@smh457 I have been using the default setting for almost 7 months, I haven't found anything solid about the sensitive setting.

[@SoutrikDG]

Instantly subscribed. Kind of content I would pay for. My Inspire 3 will be ariving today. Not really happy with how bpm tests came out. Can you please tell me if I do not carry along my mobile while swimming , will it still track distance and other parameters ?

[@NicksStuff]

I know you wanna test the accuracy of the watches rather than read the datasheets but mentioning some important features would be cool. Like some tracker don't offer a smart alarm: to me that renders the sleep analysis a *lot* less useful. You could even test it: check whether or not it wakes you up when the EEG finds you are in light sleep

[@floralpatriarch7782]

Other videos where good at guiding me here but this was ultimately the best review & analysis I have seen for sleep tracking devices.

[@pamppusnegger]

Polar ignite 3 seems pretty interesing at least for me. Do you have any plans to test it out? Would be interesting how it performs versus Garmin or more traditional watch like pixel.

[@shubhamtaneja4284]

You deserve more views!

[@yusungchoi3099]

Dude deserves all the thumbs ups

[@shoaibaalam8978]

I bought my Huawei watch fit 1 after watching your video last year 😊😊. Thank you Rob.

[@The52Hz]

How is your experience with it so far?

[@JuanSanchez-rb4qu]

Great review, tho I don't see the fitbit luxe in the sleep tracking chart, is it better or worse than the inspire at that?

[@sao_rav]

Where were you man?? Great videos!!! Thaankk you man ♥️🇮🇳

[@proscott33]

The main features of the inspire 3 over the apple watch is... "THE PRICE!!" 🤣🤣🤣🤣🤣🤣 not the nap feature! 🤣🤣 Great video and channel! i give it 4.75 out 5 stars! 😉😉

[@pradym2497]

Waiting for Samsung Fit3 accuracy test bro.... please do it.

[@forgetmyname5166]

Hi your recommendation are indeed good, thanks

[@rosiegb15]

Thank you so much for your effort in reviewing a bunch of smartwatches. Can you review amazfit gts 4/4 mini? Haven't seen a serious review for these devices. Wanna know if they improve their sleep tracking. Thanks.

[@genkishan]

Dankjewel Rob

[@suppsuppa2773]

Thanks for your efforts! I'll wait for your gtr4 review and then I'll make my decision on my next smartwatch (current one just died from salt water xD ) Keep up the good work

[@TheQuantifiedScientist]

Thanks so much! Hi! I collected a lot of data with the GTR4 and GTS4 already, just need to find the time for a video on it😊. Also keep an eye on my shorts channel ;-)

[@anirudhanpm8596]

Big respect for you my guy counting 4000 steps must have been gruesome😂

[@thachly5452]

What a freaking great job you have done, always, with so smart watches. Man you should get $xM for the time and effort you put into serving humanity.

[@lindaleyrer8647]

Love mine!!! ❤❤❤❤

[@uttamkalika597]

I watched your huawei gt 2 pro video. You promised you will do some further test. Please do

[@ruchirjadav6959]

Hi. I bought inspire 3 thinking it's accurate turns out when I travel by metro rail it records as if I am running. I ran 70 km yesterday 😂. Just an update. Folks at fitbit are difficulty to reach. Hope they do something about this.

[@bruvhellnah]

How is it working now? Is the step tracking that bad?

[@ruchirjadav6959]

@@bruvhellnah Regularly working ok.. Not sure about on subway train and that begs the question if there is any other inaccuracies..

[@ruchirjadav6959]

@@bruvhellnah Regularly working ok.. Not sure about on subway train and that begs the question if there is any other inaccuracies..

[@koustubh]

Could you please test spo2?

[@Visqo1]

Great video

[@burnoutslo]

Thanks Rob. Please do the new Amazfit series (GTR4/GTS4)

[@Deepslumber.]

Thank you! Was looking forward to your review and it's almost what I expected it to be. I only wish I could use an apple watch on android, or find a similar alternative. Keep up the good work!

[@danegossett154]

Ordered this model! Thank you for your videos--love them. Quick question.. what glasses are those. I've been looking for frames like this.

[@خالداحمدالبشيري]

thanks for every thing u test your video is ver scientific and summarized

[@WoLF_Rko]

Fitbit is great for sleep tracking it is small and comfortable for me than Apple Watch in bed. But this is just my opinion. Apple Watch are overall the best . But I am considering Huawei GT3 pro for day and this Fitbit just for sleep tracking. Thanks for reviews u are doing very good job. Nobody does this deep research about smartwatches/bands.

[@Nixeuss]

Hello, i wonder if it's worth it between this and the Xiaomi Band 7 for sleep.

[@Sofian350z]

Hello, Thanks for this great review. Did you will do the review of the new Polar Ignite 3 ? i want to by this watch but i wait to see a test of you in the future ? Thanks.

[@bhabanishankar8191]

Is inspire 3 is worth the upgrade from inspire 2?

[@timschulz1084]

Please do a Review of Polar Ignite 3! Would love to get the accuracy of it, especially on heart rate!

[@Doctor_Moisture]

What are the workout gloves at 19:04

[@michaelhansel5851]

thanks!!!

[@billphister]

I've had one of these for about 2 months now, and I absolutely agree with this review. I love the slim, inconspicuous design, and the functionality is all that I wanted, and more. The low price isn't a bad thing, either.

[@Ignozi]

Hi Rob. I had a question regarding the new Inspire 3 and the Charge 5. I'm looking for a fitness tracker with a focus on good to decent sleep tracking capability. Do you think the new Inspire 3 is in any way better or more accurate than the older Charge 5 when tracking sleep? My reasoning is that since the Inspire 3 is newer maybe Fitibit have had more time to work on the sensor and it's a bit "better" than the Charge 5.

[@ArmchairAmbience]

I would love to know about calorie burn accuracy of watches...is this just based on heart monitor accuracy?

[@loafylemon]

If you have a 'smart' scale and use it every day, it can use that to compile very accurate data.

[@ArmchairAmbience]

@@loafylemon That is awesome and makes a lot of sense...I'll look into it immediately

[@pedroleal8543]

Hello Rob, how are you? Just for sleep tracking (and maybe step counting), what you would chose between Inspire 3 and Charge 5? The price difference isn't problematic, just want the more accurate between both parameters. For HR tracking I will be using H10, so the Fitbit device will only be for those 2 things.

[@sohailahbalmer7094]

Go for Fitbit Inspire 3, see 17:05 for reference.

[@ellegaertner]

Many thanks truly useful 👍🏻👍🏻 just be aware that you can't control music playing on your phone via Bluetooth through this watch.

[@rohanraghavan9431]

Love the methods and data analysis.. Just one thing that I wanted to check. I own a scan watch 2 and was getting poor readings before I reread the instructions where they require you to fasten it higher up in the forearm rather than your wrist. I've I did that readings were much better. Might be worth retesting and ranking of this was not accounted for. Will be good to know either way.

[@rohanraghavan9431]

Oh and this video helped me decide! I just bought an inspire3 for the mrs. who just needs the basics.

[@ATHLIT]

do i have to pay a subscription for fitibit for the scores you are getting?

[@TheQciap]

Sir (as a show of my respect) - is there a chance to see your charts where you compare all the devices together per category: HRV, et? Would be good for user then to pick proper model with right price/value ratio. Thanks in advance Cheers

[@xandricoetzee6698]

Awesome video! Why wasn't the Sp02 tested like the huawei band 7 video?

[@Aiden_B]

Can you do the forerunner 955?

[@justinek.5542]

I would also like to monitor my sleep and would like to buy a Fitbit. Since they are all so big, I was thinking about the Charge 6 or even the Fitbit Luxe or Fitbit Inspire 3. The last two are just for the same price. Which of the two would you recommend? Or do you know another tracker that is very good but not so big - even the Apple Watch Se is too big for my very small wrist. Unfortunately, the Huawei and Mi Band weren't that good.

[@jeremykrall1694]

You mention over counting of steps, was that while worn as a watch or in clip mode? It would be interesting to see if having the device clipped closer to your hip would give a more accurate number. And since Fitbit now has a clip mode for some of these smaller trackers, maybe that is a better use.

[@marijadzincic2408]

Any recommendations Fitbit Inspire 3 or lux? Thanks a lot!

[@jlaw9793]

I’m looking for a thinner band type fitness watch that is good at both sleep tracking and heart rate. Does this exist? Every review I watch of yours it is either good at HR tracking or sleep but not both.

[@YogaWithGail]

What would be the best EKG, Afib, detection watch, that is not an apple?

[@dankspain]

Did you test the SPO2?

[@nohai5960]

Still waiting for your Amazfit GTR 4 Review 😃

[@TheQuantifiedScientist]

For sure! Also keep an eye on my shorts channel for some early results 😊

[@williamstevenson2649]

My I ask a data science question?- your HR ability ranking employs the correlation with the Polar H10, with the time along the x-axis. Do you adjust the HR traces to allow for the devices not being on exactly the same time (if they are not all GPS-connected, for instance or if the device processing introduces slight delay to the trace) ? This is really the same question: what would be the correlation between a device trace and exactly the same trace delayed by 1 or 2 seconds? Thanks

[@TheQuantifiedScientist]

Hi William! I do not correct for this. I generally try to inspect if there are any major issues, but this might have some minor effects. I could try different shifts (e.g. 15 second each way at 1 sec intervals) for each exercise, and select the one with the best correlation. Something to consider for the future.😊

[@samuelecornell7432]

@@TheQuantifiedScientist I think you can safely use Generalized Cross Correlation with Phase Transform to align the signals. However if the two devices have different sampling frequencies that also should be accounted for and the problem for "optimal" alignment is less trivial.

[@Tsinepanos]

Maybe make an global google sheets Excel with all the watches with ranking and category ?

[@andreabui85]

Hi!! Your channel is very interesting!! Can you test the "Muse S" device for the sleep tracking?

[@socialmediaartistsfunchat]

What should I pick, inspire 3 or luxe

[@royalh1261]

Hi @quantified scientist, i have ordered the honor band 6 as i got it for just 27$ and I hope it is a good watch at health tracking. What is your opinion?

[@s1xto]

I wonder after many months the HR tracking improved with firmware updates, torn between this and Charge 6 for both HR and sleep tracking

[@dinudoncool]

What did you end up getting and how has your experience been?

[@s1xto]

@@dinudoncool as of now i haven't bought anything, figured i might wait for the Charge 7 and get that