I first put on my whoop in August 2024, and haven't taken it off since. I wore an apple watch before, and I am so grateful to have made the switch my life literally changed. I love that it doesn't have a screen and it's just a bracelet, it really just takes away the stress I had with the apple watch that I just had a screen on me at all times that I just kept overly checking. With the whoop I can just have it on and not think about it while getting all the data I love to have.
That being said I am a data person. I workout everyday: I lift, I run, I go to pilates, I take boxing classes, and I walk my minimum 10k steps almost daily. I love that I can track it all. The whole concept of strain instead of just checking calories burned is really interesting to me. I think the recovery tab is also super innovative. Although yes, sometimes I feel recovered and feel like I'm not in the red, it's really cool to see what goes into giving me that outcome. It's also super cool to see how your metrics change when you're sick or injured, it's just crazy how it's able to sense what's going on in the body like that. Most recently I had like a 2 week kick of having energy drinks (I had never had them before in my life), and I just started being in the red like never before (and I physically felt really bad), which led me to the conclusion it was the the energy drinks- I stopped having them and my recovery went back to normal. Honestly the whoop is so helpful in that way, just helping me make adjustments in my life to make me feel my best.
As for the cons, you will never really own a whoop, because it only works while you pay the subscription. It's practically useless without it. I don't really mind this though, I think this is something that is worth my time and money for a long time.
Another would be I wish it more other features. There's no GPS on the whoop, so on my runs I do still wear my apple watch to get a more accurate milage and pace measurements. You can take your phone too for the GPS feature, which I do, but it doesn't record your splits and the pace and milage are consistently 0.2 miles off. If you're a runner, I would recommend another watch with the whoop.
I know they also recently added a step counter, which was crazy inaccurate when they first released it, though it's gotten much better now, though not perfect. I hope in the whoop 5.0 they continue to make it better since it's a metric I pay close attention to.
Overall, the whoop has its pros and cons, just like any other watch. But I love my whoop and will continue to love my whoop until they give me reason not to.