Zwift Companion v 3.83 [May 2026]

Hi everyone,
Phased rollout of Zwift Companion version 3.83 begins today.

  • iOS only: Fixed a bug where the app could hang when scrolling through the list of workouts
  • Minor bug fixes and improvements

Do you have questions or issues to report? Let us know below.

@shooj are there any plans to make changes to the Companion App so we can see what routes the robo pacers are on without needing to log in or look it up on Zwift Insider? It would be a handy feature if it were visible from the main page on the app.

Nevermind. ZC worked fine this morning…

:face_with_raised_eyebrow: all stops are coffee now

There’s an issue where the baseline that ATL is compared against is getting back-calculated and lowered retroactively. Yesterday I was in overreaching but as of today it was lowered to productive. Both bumps in the last couple points were also overreaching at the time but due to increasing CTL causing this retroactive baseline change, they were lowered to barely productive.

As I’ve cancelled for summer, why am I still getting notifications for zwift events?

are you referring to emails or notifications from the companion app?

If your account is subscribed to marketing emails you will keep getting them. You can opt out of marketing emails if you want, or filter them on the receiving side, or delete your account.

You’re probably still going to see ads for Zwift too, especially during the tour de France. Just warning you. :wink::joy:

Yesterday is now no longer overreaching despite being there yesterday. This is not how ATL/CTL are supposed to interact. Yesterday is even now showing as lower than the recent local high despite having been higher than it yesterday

notifications on the app

You can turn them off

yet there’s no option in there to turn off an event that I’m not signed up for and have no interest in, quelle surprise, might aswell turn everything off for the summer months

just uninstall the companion app, you don’t need it while unsubscribed anyway right?

Or just disable app notifications on your phone…

At least Zwift gives us so much customization with notifications nowadays.
Most apps don’t give any options what-so-ever; either on/off in your device settings.

Just going to touch on this one more time. Screenshot from last night, again showing overreaching on yesterday:

Screenshot from this morning, showing yesterday’s status lowered to productive (and even lower than the high point from a few days ago now);

Data nerd here. Please keep in mind you are looking at a program’s best guess based on whatever data the programmer wants to feed it. None, as in zero, of these ‘AI’ influenced programs do absolute values, discrete dates, outliers, etc well. None of them. Not the free ones, not the pricy ones, not the wearables. The overall trends when looking at data analyzed over periods of time can be helpful. Looking at discrete days is meaningless. These are early days of physiology data acquisition and analysis. Please continue to play along as we all learn what it all means and contribute to the data sets and discourse. However, take it all with a large and unwieldy grain of salt. There is one wearable which seems to be ahead of others - your brain. Pay attention. Your body keeps the score. Ride a lot, eat a lot, rest a lot, and ride on.

This isn’t AI it’s a known and years-old algorithm. It’s simply an incorrect implementation of it, back-calculating the CTL value when it shouldn’t be.

Ummmmm… ATL and CTL are best analyzed over time. The idea that this data is used to make decisions about specific dates has been shown to be ill advised.