Rain is a very basic simulation of a raining animation on your computer screen, it helps with anxiety, relaxation, and trying to sleep. The page is halestorm512.itch.io/rain. It is technically both browser and free. But I put it as free because you have to download the files to get it into your local browser.
All of the code is nice and organized so you can adjust the angles of the rain drops, how fast they go down, the sizes, the colors, and even more!
I would recommend seeing the site https://mynoise.net/NoiseMachines/rainNoiseGenerator.php because it has a lot of rain sounds that you can work with and I really enjoy it. I did not make that website I just find it useful.
I will help anyone who needs help with the programming or adjusting if they need me at halestorm512@gmail.com
The code comments that are labelled DO NOT MESS WITH, should no be messed with for the sake of keeping the code organized and working.
Do not be afraid to change the variables but be gentle and don't be afraid to ask for my help at halestorm512@gmail.com
Thank you and Happy Raining!