Licenses

Sounds

Most recordings are released into the public domain under Creative Commons 0 (CC0) by their authors on Freesound. CC0 does not require attribution; we thank every recordist who shares their work this way.

Some nature recordings (loons, wolves, a lake at night, a wood stove) come from the U.S. National Park Service — Yellowstone Sound Library, in the public domain. Courtesy of the National Park Service.

One whale recording comes from Wikimedia Commons, released under CC0.

Noise colours, ambient music and singing bowls were synthesised for Sleep Well.

Fonts

Nunito — Copyright 2014 The Nunito Project Authors, SIL Open Font License 1.1.

Software

Sleep Well is built with Flutter (BSD 3-Clause) and open-source packages under their own licenses; Material Symbols icons by Google are licensed under the Apache License 2.0.