Privacy Policy

Last updated: June 12, 2026

The short version: SleepEasy has no accounts, no analytics, and no servers it reports to. It does not collect, transmit, or sell any personal information. Everything happens on your own device.

What SleepEasy does

SleepEasy is a Chrome extension that adds neighborhood crime context and AI-estimated room square footage to StreetEasy NYC listing pages. It is an independent project and is not affiliated with StreetEasy, Zillow Group, the NYPD, or the City of New York.

Information the extension handles

• Listing page content. On a StreetEasy listing, the extension reads the page to find the listing's map coordinates and photos. This reading happens entirely in your browser.
• Your room groupings and settings. When you group listing photos into rooms or change settings, those choices are saved locally using Chrome's storage.local on your device. They are never uploaded.

What is transmitted, and to whom

• Crime statistics: nothing leaves your browser. Crime data ships inside the extension as static files. Mapping a listing to its neighborhood and its statistics is computed locally. No network request is made.
• Square-footage estimation: only to your own computer. This optional feature requires a local backend that you install and run yourself on 127.0.0.1 (localhost). When you analyze a room, the listing's photo URLs are sent to that local backend, which downloads and analyzes the photos on your machine. No data is sent to the extension's developer or any third-party service.

What SleepEasy does not do

• No user accounts or sign-in.
• No analytics, telemetry, tracking, or advertising.
• No collection of personal, financial, health, location-history, or browsing-history data.
• No sale or sharing of any data with third parties.

Data retention and deletion

Because all data stays on your device, you control it completely. Removing the extension, or clearing the extension's storage in chrome://extensions, deletes everything SleepEasy has saved. The local backend stores only model files and any analysis artifacts in folders on your computer, which you can delete at any time.

Third-party data sources

The bundled crime statistics are derived from public datasets — NYPD complaint data and neighborhood boundaries via NYC Open Data, and population and workplace figures from the U.S. Census Bureau. These are compiled offline into static files; the extension does not contact these sources at runtime.

Changes to this policy

If this policy changes, the updated version will be posted at this URL with a new "last updated" date.

Contact

Questions or concerns? Open an issue on the project's GitHub repository.