Effective date: August 2, 2026 Last updated: August 2, 2026

Perfect Stack is a Chrome extension that opens a self-contained, offline precision stacking game from the toolbar.

This Privacy Policy explains what information Perfect Stack processes, why it is needed, where it is stored, and the choices available to users.

Summary

• Perfect Stack works without an account.
• Perfect Stack stores game scores and preferences locally in the user's Chrome profile.
• Perfect Stack does not operate a backend server and has no network access.
• Perfect Stack does not transmit any data to the developer or to third parties.
• Perfect Stack does not sell user data or use it for advertising, profiling, or any unrelated purpose.

Information Perfect Stack processes

Perfect Stack processes only the information needed to run the game and remember a player's local progress.

Game results and history

Perfect Stack stores, for each completed run: the score, number of perfect placements, best combo, and the time the run was played. It keeps the player's all-time high score, lifetime totals, and up to the 50 most recent runs.

Preferences

Perfect Stack stores the player's sound (on/off) and reduced-motion preference so these choices persist between sessions.

Perfect Stack does not store names, email addresses, account identifiers, payment information, location, browsing history, page content, or any information from websites the user visits.

Information Perfect Stack does not collect

Perfect Stack does not collect or store:

• names, email addresses, account identifiers, or other personally identifiable information;
• passwords, authentication information, cookies, or form data;