Cookie Policy
Last updated: August 2026
1. Cookies and Local Storage
This policy covers the small pieces of data Chemspark keeps in your browser. A few are cookies (small text files sent with each request); most are local storage (data that stays in your browser and is never sent automatically). We treat both the same way here, because the same privacy rules apply to both.
2. What We Use It For
Chemspark stores data in your browser only to keep the app working and remember your preferences. On our public website we also use privacy-friendly, cookieless analytics to count visits. We don't advertise or track you across sites.
2.1 Essential
Required for the app to work. Without these you cannot sign in or use the service:
- Keeping you signed in (authentication and session)
- Remembering that you have seen this cookie notice
2.2 Functional
Not required, but they remember choices you make so the app behaves the way you expect:
- Your language preference
- Light or dark display mode
- Your last selected organisation and location
- Whether the sidebar is expanded or collapsed
3. What We Store
The full list of what Chemspark keeps in your browser:
| Name | Purpose | Storage and duration | Category |
|---|---|---|---|
| sb-ipfgqkwoebdzvolzusdq-auth-token | Keeps you signed in | Local storage · until you sign out or clear it | Essential |
| cookie-consent, cookie-consent-date | Remembers that you have seen the cookie notice | Local storage · persistent | Essential |
| language | Your language preference | Local storage · persistent | Functional |
| selectedOrganizationId, selectedLocationId | Your last selected organisation and location | Local storage · persistent | Functional |
| theme | Light or dark display preference | Local storage · persistent | Functional |
| sidebar:state | Whether the sidebar is expanded or collapsed | Cookie · 7 days | Functional |
4. Managing What Is Stored
Chemspark stores only essential and functional data in your browser, and our website analytics are cookieless and aggregate — nothing invasive to opt out of. You can still clear or block this data at any time:
4.1 Our Notice
On your first visit, a short notice confirms we use essential cookies plus cookieless analytics. There is no advertising or cross-site tracking to consent to.
4.2 Browser Settings
Your browser lets you clear or block this data. You can:
- Block cookies and site data
- Clear existing cookies and local storage
- Allow site data only for specific sites
- Set your browser to notify you when data is stored
Note: Clearing essential data will sign you out and reset your preferences, but will not otherwise harm your account.
5. Third-Party Data
We use no third-party advertising or tracking cookies. Two services process data for us: Supabase (your login session) and Vercel Web Analytics (cookieless, aggregate visit counts). Nothing is shared with advertisers.
6. Updates to This Policy
We may update this Cookie Policy from time to time. Changes will be posted on this page with an updated revision date. We encourage you to review this policy periodically.
7. Contact Us
If you have questions about our use of cookies and local storage, please contact us at:
Chemspark
Contact form: www.chemspark.net/contact
8. More Information
For more information about cookies and how to manage them, visit www.allaboutcookies.org