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Cookie Policy

Last updated: March 18, 2026

Quick Summary (TL;DR)

•Essential cookies only by default: We only use cookies necessary for the site to function.
•No ad tracking: We never use cookies for advertising or sell your data.
•Analytics are optional: We use privacy-respecting analytics (Vercel Analytics) that you can opt out of.
•localStorage for calculations: Your financial data is kept in your browser's localStorage, not in cookies. If you have an account it is also saved to your account — see the Privacy Policy.

1. What Are Cookies?

Cookies are small text files that websites place on your device to store information. They help websites remember your preferences, keep you signed in, and understand how you use the site. We also use similar technologies like localStorage and sessionStorage.

2. How We Use Cookies

Sagery uses a minimal set of cookies and browser storage technologies. Here is a complete breakdown:

Cookie / Storage	Type	Purpose	Duration
sb-*-auth-token	Essential	Authentication session (Supabase)	Session
retirement-calculator-storage	Essential	Your calculator inputs and results (localStorage)	Persistent
sagery-theme	Preference	Dark/light mode preference	Persistent
sagery-last-seen-version	Preference	Tracks changelog version so we only show new updates	Persistent
sagery-feedback	Preference	Stores your feedback submissions locally	Persistent
_vercel_insights	Analytics	Privacy-respecting page view analytics (no personal data)	Session

3. Essential Cookies

These cookies are strictly necessary for Sagery to function. Without them, you would not be able to use core features like logging in or saving your calculator inputs. Essential cookies cannot be disabled.

4. Preference Cookies

These remember your settings and choices (like dark mode or the changelog version you last saw). They make your experience smoother but are not strictly necessary. You can clear these by clearing your browser's localStorage.

5. Analytics Cookies

We use Vercel Analytics, a privacy-respecting analytics service that does not use cookies to track individual users. It collects anonymous, aggregated data about page views and performance. No personal information is collected or shared. You can opt out of analytics tracking in your browser settings or by using a browser extension that blocks analytics scripts.

6. What We Do NOT Use

✕Advertising or tracking cookies
✕Third-party social media tracking pixels
✕Cross-site tracking or fingerprinting
✕Selling or sharing cookie data with third parties

7. Managing Cookies

You can control and delete cookies through your browser settings. Here's how for common browsers:

Chrome: Settings → Privacy and Security → Cookies and other site data
Firefox: Settings → Privacy & Security → Cookies and Site Data
Safari: Preferences → Privacy → Manage Website Data
Edge: Settings → Cookies and Site Permissions → Cookies and site data

Note: Clearing localStorage will reset your calculator inputs and preferences. You will not lose any data stored in your Sagery account (Pro users).

8. Changes to This Policy

We may update this Cookie Policy from time to time. If we make significant changes, we will notify you through the app or by updating the "Last updated" date at the top of this page.

9. Contact Us

If you have questions about our use of cookies, please contact us at privacy@sagery.co.

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