[netule]

This appears to be brown noise, not white noise.

I have no affiliation with this macOS app, but I use it for the same reasons you do. It's paid, but worth it IMHO. It generates the noise on your own machine, and you can pick what kind of noise you want to hear: https://apps.apple.com/us/app/brown-noise-ambient-noise/id15....

[dahart]

Note that the site that hosts Neuromodulator also has free client-side color noise generators, white, brown, pick, etc. https://mynoise.net/NoiseMachines/whiteNoiseGenerator.php