The essentials

App terms

Updated October 21, 2026

Echoes of Slumber is provided by Pliologik LLC. The app uses Apple’s Standard Licensed Application End User License Agreement. App Store purchases are also subject to Apple’s applicable store terms.

One purchase

The complete app is offered as a one-time paid download, with no subscriptions or in-app purchases. The price and any applicable taxes are shown by the App Store before you purchase. Apple handles billing and refund requests.

Personal listening

Echoes of Slumber generates ambient sounds and tones for relaxation and personal listening. It is not a medical device or treatment and does not promise a particular sleep or health outcome. Listen at a comfortable volume, and do not use it when it would distract you from driving or another activity that requires your attention.

Your local library

Your mixes and preferences are saved on your iPhone. Device loss, deleting the app or changes to your backups may affect that data. See our privacy policy for details.

Contact

Questions about the app? Email info@pliologik.com.