Fitbit Inspire 3 : Full Scientific Review

🟡 Twitter: @QuantifiedRob
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Timestamps:
00:00 Intro
00:48 Most Important Remarks
01:40 Heart Rate Test 1: Spinning
06:06 Heart Rate Test 2: Running
06:42 Heart Rate Test 3: Cycling
09:18 Heart Rate Test 4: Weight Lifting
11:32 Sleep Stage Test 1: Sleep Stages
16:14 Sleep Stage Test 2: Overview
17:53 Step Test 1: Real Steps
19:00 Step Test 2: False Steps
20:38 Conclusions & Recommendations

Intro: I’ve tested quite a few new Fitbits over the last weeks, and this little Fitbit, the Fitbit Inspire 3, might actually be my favorite out of all of them. If one of my friends wanted to buy a Fitbit, this is the one I would most likely recommend. In this video, I’ll systematically and unbiasedly test the heart rate tracking accuracy, sleep tracking performance and step counting accuracy of the Fitbit Inspire 3. By the way, even though I would recommend the Inspire 3 out of the Fitbits I recently tested; whether you should buy any Fitbit at all is another question altogether, which I’ll also address in this video.

I did want to make 3 short remarks about the Inspire 3: first of all, the biggest change compared to the Inspire 2 is the new screen; the Fitbit Inspire 3 now has a color screen and also a slightly different design. Overall, it looks less bulky to me, and I honestly like the overall look much better. Second, the Inspire 3 is still the entry level Fitbit, setting you back 100 dollars, making it the most affordable Fitbit from this latest generation. Finally, you should be aware that the Inspire 3 does not have built-in GPS, so you still need to take your phone with you to track your workouts. Now, that’s enough background, let's get to the test results.

[TheQuantifiedScientist]

🔵 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.
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👇 $30 off any new WHOOP membership, affiliate* (paid) link, supports the channel!👇

[felixbrandau]

The only one who compares the watches seriously

[haythemkarchoud]

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 !

[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!

[Juanjo]

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

[lozovic]

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

[chrispaulin]

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

[khreon]

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.

[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!

[humanmale]

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.

[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.

[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 Youtubers merely regurgitating the product specs. Bravo!

[nicolasc-m]

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.

[kanakraj]

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

[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

[mehmetaliyurtofficial]

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

[mfahlers]

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

[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 =)

[dutchdude]

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