Hi Jonas, thank you for making this and for letting me know! This is a cool, neat utility to help us breathe better. It functions like Apple breathe app which I got with Apple Watch after recommendations here but https://breather.school/ reminds me about breathing all the time as it's in the front, on the computer screen all the time.

Now I just wish it could measure my actual breathing rate and correct the visuals accordingly to aid in better breathing.