I've used Misu for about 6 months.
I use my computer a lot. Between coding, video calls (especially now that I'm WFH), reading articles, and youtube rabbit holes, I might find myself on the computer 8-10 hours a day on average.
Having an external assistant that not only shows me my usage, but how these platforms are affecting me has been hugely beneficial to my mental wellbeing and has directly changed my behavior.
Most importantly, Misu helps me the most when I'm at my worst. If I'm in a low mood, it's harder for me to realize that myself. But seeing my wellness number lower than average for hours or days in a row is a really strong indicator for me.
Privacy is a pretty important concern for me (for example, I don't allow any Facebook-published apps onto my phone, use a variety of blockers on desktop). Initially I was skeptical, but the Misu team has been very responsive about my concerns and answered all my questions along the way.
All in all, I would recommend! Very excited to see how this product develops in the coming years.