Whoop 4.0 Introduced: Right here’s What’s New and Modified



Immediately, Whoop introduced their new 4.0 sensor/system. Whoop is part-device, part-platform. The system is a small pod that doesn’t show any metrics itself, however moderately has sensors to gather these metrics and transmit them to your cellphone and the bigger Whoop cloud platform. Traditionally that’s been heart-rate pushed knowledge, however the brand new 4.0 pod consists of blood oxygen ranges and pores and skin temperature. As soon as within the Whoop platform the corporate gives boatloads of information round what they dub ‘pressure’ and ‘restoration’. In different phrases, how a lot/exhausting have you ever been figuring out, and the way effectively are you recovering.

And whereas Whoop’s platform/software program has largely been incredible and modern, the optical coronary heart charge sensor inside the Whoop 3.0 band may solely be described as a dumpster fireplace. And thus, because the saying goes: Crap knowledge in, crap knowledge out. No quantity of analytical processing may repair the flaming river of dangerous knowledge into the platform. I talked about this at size in my overview, and a few 346 feedback since then confirmed this by everybody else. Actually, no one has managed to indicate me a single good exhausting/interval/and so forth exercise with correct comparative HR knowledge. And sure, I’ve really continued to put on the Whoop 3.0 sensor since my overview.  And with 379 exercises value of information in each doable physique location, in comparison with 2-4 different coronary heart charge sensors per exercise, and 531 ‘recoveries’. I’m fairly certain no one has as a lot comparative knowledge as I do on this factor. Which, means I’ll be effectively suited to speak about what, if something, has modified on the 4.0 version.

Whoop’s new 4.0 sensor is seemingly all about bettering accuracy of that knowledge (in addition to including extra knowledge). We’ll get to these technical bits in a second.

First although, the brand new sensor isn’t really the one announcement in the present day. The second bit is that the corporate is making attire to carry stated new sensor pod. This consists of all the things from shorts to sports activities bras, compression tops to leggings. Plus another new bands (particulars down under).

Lastly, whereas I don’t have a brand new Whoop 4.0 sensor fairly but, I’m instructed one is on the best way to me very shortly – the place I’ll be capable of put it via its paces. Given Whoop reached out to me forward of this announcement, I can solely assume they’re optimistic that they’ve solved their accuracy points. Else, they’ll find yourself with one other overview like final time. I’m easy that manner.

What’s New in 4.0:

So let’s dive into what’s new by way of the Whoop 4.0 {hardware}. Observe that whereas there’s additionally set to be a whole revamp of the Whoop app interface, that’s not a part of in the present day’s preliminary announcement. So I’ll cowl that after it occurs.

Right here’s the brand new Whoop 4.0-specific options (all of that are hardware-driven):

– New sensor: This now has 5 LED’s (3xGreen, 1xRed, 1xInfared) in comparison with the earlier 2xGreen. It now has 4 photodiodes, versus the 1 beforehand.
Added Pores and skin Temperature: We’ve seen this on a couple of wearables through the years, and is usually used with sleep knowledge
– Added Blood Oxygen monitoring: Measures SpO2, which is usually utilized in each sleep-related knowledge and excessive altitude knowledge
– Added Sleep Coach with on-device alerts: It will wake you up based mostly on optimum sleep cycles
– Added haptic motor (vibrations): This implies the band can now provide you with a warning to issues, beginning with waking you up by way of Sleep Coach
– Added “Well being Monitor”: That is extra of an app dashboard factor, which exhibits stay HR/pores and skin temperature/blood oxygen/resting HR/HRV/respiratory Fee
– Added PDF Export of Well being Monitor: This lets you export out your Well being Monitor dashboard metrics in a PDF for medical doctors/sports activities workers/and so forth in 30-180 day chunks.
– New Battery Design: Whoop says that they’re the “first product on the earth” to make use of Sila’s new Silicon anode battery, which has 17% increased power density and longer cycle life
– 5-day battery life: The unit maintains the earlier 5-day battery life declare, regardless of the unit being a lot smaller
– New Whoop Battery Pack: This new pack is waterproof (woot!) and permits a double-tap for battery degree
– Smaller measurement: Whoop says it’s now 33% smaller than prior

Many of those new measurement metrics are just about desk stakes for wearable gadgets as of late. A lot of the new knowledge metrics seen above have been on some mixture of Apple/Garmin/Fitbit/Samsung gadgets for years. Within the case of pores and skin temperature, we first noticed that waaaay again when on the Foundation B1 system. Do not forget that? Arguably Whoop earlier than Whoop as an idea even existed. Intel in fact killed that.

WHOOP 4.0_Wrapped_Arctic_Back_Left

The battery pack being waterproof is large. I’ve lengthy stated the battery pack is arguably my favourite a part of Whoop. The small pod snaps on the again of the Whoop strap, and is like mid-air refueling. Thus, you by no means should take off the Whoop strap to cost it. You cost the battery pack, which then prices Whoop.

The issue although was that generally (okay, quite a lot of occasions), you’d placed on the battery pack after which overlook about it, after which leap within the bathe. The unit itself has a small micro-USB port on it, which then let in water. Now regardless of me very-much-not-purposefully showering with it in all probability half a dozen occasions, it survived until the seventh time. Then it died and I had to purchase a brand new one. Nonetheless, props for lasting that lengthy. In any occasion, this resolves that.


Now, as you might bear in mind from my overview – I stated there have been three vital adjustments that I felt Whoop (3.0 and the platform as a complete) wanted, all three of that are tied collectively a bit. They have been:

A) A brand new optical HR sensor: Self-explanatory
B) The flexibility to delete/nullify inaccurate knowledge: That is essential if/when the sensor thinks that doing the dishes is a tough interval exercise, because it spikes your pressure worth for the day and there’s no approach to purge it.
C) The flexibility to pair to an exterior HR sensor: That is/was essential for exercises the place the Whoop sensor didn’t work effectively

Clearly, B & C are largely on account of A’s points. So I requested Whoop whether or not or not that they had applied both of the opposite two within the app (since that has nothing to do with the {hardware} itself), and sadly, neither have modified at this level. Whoop says that “members will be unable to edit an exercise to take away a coronary heart charge measurement they might really feel is off (i.e., the HR spike you talked about). WHOOP remains to be its personal wearable and the app is not going to sync with one other system like a chest strap.” That is unlucky, however maybe the brand new sensor will eradicate this sufficient to be on par with different wearable firms the place it’s much less of a priority.

Right here’s a fast take a look at the brand new Well being Monitor dashboard, the place you possibly can see each the present values in addition to your regular values.


By way of pricing, current Whoop members will be capable of get the Whoop 4.0 pod totally free, so long as they’ve no less than 6 months left on their membership. As a reminder, the Whoop system doesn’t actually have a set worth – moderately, they’ve a minimal membership cost. Roughly talking although, it really works out to $180/system, for the reason that minimal month-to-month membership is 6-months at $30/month. So long as you may have no less than 6 months left, then you possibly can improve immediately from the app or website, and items will start delivery September twenty seventh.

Whoop Physique:


Subsequent up is Whoop Physique, which is actually a line of attire that holds the Whoop sensor. At first look, you would possibly suppose that is an attire play (and sure, that’s true too). However in actuality, that is in all probability extra of a sensor accuracy and membership retention play. Bear in mind: If individuals take off their Whoop and overlook to put on it, then Whoop’s $30/month membership near-instantly turns into ineffective.

Whereas the Whoop band may be very comfy, there are a lot of situations the place it’s simply not tremendous sensible – both for consolation, or for accuracy (and even sport regulation-wise). All of Whoop Physique’s new clothes intention to carry the Whoop sensor in opposition to your physique in order that the sensor remains to be helpful. Additional, the unit claims to know which place on the physique the sensor is positioned. Whoop says that’s by way of their “Any-Put on” detection expertise constructed into the garment itself.

There are  few various things at launch:

– Compression tops ($64)
– Leggings ($109)
– Shorts ($78)
– Sports activities bras ($79)
– Bralettes ($54)
– Athletic Boxers
– Common Boxers (pack for $69)
– New ‘SuperKnit’ and ‘HydroKnit’ bands

The brand new bands are barely totally different. The corporate says the SuperKnit band comes pre-threaded, and thus can have longer sturdiness. Whereas the HydroKnit band is designed extra for water sports activities and is quicker drying. Anybody with a present Whoop strap is aware of the ‘FML’ second when post-shower you lay your wrist close to your thigh/crotch (similar to sitting on a sofa), solely to have the Whoop strap soak a big moist spot there – realizing it a minute later. Hopefully this may dry quicker.

Going Ahead:


Once more, this submit is most positively not a overview. That’s apparent by the title which lacks the phrase Assessment, but in addition by the shortage of any knowledge to corroborate Whoop’s claims. So, as soon as I do have adequate testing knowledge/time, I’ll be taking a look at largely one core factor: Is it lastly correct? Or no less than, correct sufficient.

I say ‘sufficient’, as a result of that’s in all probability a extra essential factor right here. Only a few optical HR sensors are excellent 100% of the time. Simply as chest straps are hardly ever excellent 100% of the time. I’ve examined sufficient to know that. As a substitute, what I need to know is whether or not or not it’s right sufficient as to not meaningfully skew the end result pressure and restoration stats. The core subject with the Whoop 3.0 sensor is that it vastly undercounts intense efforts (on account of overcompensatingly conservative algorithmic smoothing), whereas typically incorrectly selecting up non-existent actions as intense efforts. This meant that actually exhausting exercises aren’t accounted for correctly, whereas doing the dishes deserves the equal pressure of 32×800 on the observe. If Whoop can obtain accuracy on par with the newer Apple/Garmin/Polar optical HR sensors (which, aren’t excellent, however are much better than the Whoop 3.0 sensor), then it’s probably adequate for the overwhelming majority of use circumstances.

If Whoop has managed to drag that off with this new sensor – that’ll be a giant factor. It nonetheless doesn’t resolve for whether or not or not it’s value $30/month, however that’s one thing we are able to dive into the total overview (in addition to whether or not the nightly Whoop restoration rating is extra correct).

With that – thanks for studying!

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