Noisli

Noisli is the official ambient-sound and color-generation app designed to improve focus, reduce stress, and aid sleep. This Chrome extension lets you mix high-quality sounds, save your favorite combinations, and enjoy offline playback for work, study, or relaxation.

Key features include a timer with fade-out, offline sounds, the ability to create and replay custom soundscapes, and syncing across devices with a Noisli account. Use it to boost productivity, mask distractions, or simply unwind.