Effective Date: February 27, 2026
Sleep Train (“the app”) is designed with privacy as a core principle. Your scripts belong to you, and should only be seen by you. Sleep Train is built to keep your data entirely on your device.
Sleep Train stores your scripts locally on your device only. No script data ever leaves your device.
Sleep Train does not:
Sleep Train uses Kokoro, an on-device language model, for high-quality text-to-speech synthesis. All audio processing happens entirely on your device. No part of your scripts is ever sent to any external server for processing. The standard Apple Speech engine is also available and likewise processes speech locally.
To verify your purchase of the Pro Audio feature, Sleep Train uses Apple’s standard In-App Purchase infrastructure. This involves a connection to Apple’s servers to confirm the purchase. No script content or personal data is included in this transaction. This is the only connection Sleep Train makes to any server outside your device.
Any updates to this privacy policy will be posted on this page with a new effective date.
For privacy-related questions, contact: privacy@reiterate-app.com