Soothing Noise Player — Open Source Productivity App

GPL-3.0-only

Intended to be an android port of Blanket. Features:

Play any combination of 15 calming noises on loop mixed at volumes of your chosing
Import custom audio assets
Save your favorite combinations and load them later
Start default profile on launch (optional)
Set a sleep timer and have all noises fade out after a delay

Based on Blanket, available on flathub.