Hi all, thanks for the note on this.
For anyone having this issue, can you please email support@whoop.com with the following information:
We would like to get a report submitted for each occurrence. Thanks so much!
Hey Durkin, I don’t think many people are going to submit formal requests.
This is a significant issue that should illicit an update ASAP.
What are you hearing from development?
Response from support:
Hi Marek,
Thanks for getting back to us here at WHOOP support and providing these screenshots!
It looks like you’ve encountered a bug, and we’ve passed the details along to our engineering team. While we don’t have a timeline for a fix, keeping your app and firmware up to date will help ensure you receive any improvements once they’re released. We know how disruptive this can be and really appreciate your patience while we work to get things back on track.
In the meantime, we advise you to clear both the phone and app’s cookies and cache. This seems to help reduce the battery drain rate. Since your report has been logged, we’ll close this case.
Please let us know if you have any questions or if there’s anything else we can do to help!
Kind regards,
WHOOP Support Team
I am experiencing the same behavior after switching to the Whoop MG! It accounted for 44% of my battery drain over the last few days. This is a major problem! Any idea how to fix yet? My whoop 4.0 used 3-4%
Hi everyone, member of the WHOOP engineering team here. We have released a new firmware for your straps for those of you that have commented. The new version is 50.30.4.0, after installation you can confirm your version on the device settings page under advanced. The firmware has some optimizations that should reduce the amount of work your phones need to do. We appreciate everyone’s input on the issue and don’t hesitate to let us know if after updating it improves your phone battery performance. We appreciate any and all feedback.
I need to be added to this please. Having to keep the app forced closed so it doesn’t keep my iPhone awake is relatively annoying.
I’ve been having the battery issue as well (I’ve emailed support). I just updated to latest firmware and it is 50.30.3.0. Can’t see a 50.30.4.0 though?
My phone draining for the whoop went to 55%. Can i please also get this update???
Mine is dying as well. I sent an email to support but I am still on 50.30.3.0
Please add mine to the update. I just tried and it’s not there for me.
Can I please be added to this list. My iPhone 15 pro max is getting slaughtered daily. Lol
How can I be added to the upgrade please?
Please can I be added to the update.
Can I be added to the update, I just emailed support with my details.
Same here. Please can I be added to the update list?
Same problem here. iPhone 15 Pro.
When will this patch be released to everyone? Seems like it’s a common problem, probably affects all users and only some are reporting it here
Please add me to the list as well. My phone battery is dying. whoop is taking 44% of my battery 
The Whoop app is taking 39% of my battery on my iPhone 16 Pro Plus. I have to basically keep it on the charger if I’m sitting at work, otherwise my phone will die before I get home at night.
The firmware update seems to be working for me. Thanks!