Privacy Policy

Who operates CarbEngine

Sweltr LLC operates CarbEngine.

For privacy questions, contact support@carbengine.com.

Current data collection

The current calculator can be used without an account. It sends the values you enter to the calculator API so the app can return estimated recipe results.

CarbEngine records limited first-party beta events when a recipe is built or a supplier button is clicked. These events use anonymous visitor and session IDs so CarbEngine can estimate recipe builds, shopping interest, and repeat visits without requiring login or collecting names.

Beta events are stored in Supabase/Postgres when CARBENGINE_DATABASE_URL is configured.

If you request a recipe email after viewing shopping options, CarbEngine stores your email address, current calculator inputs, recipe payload, bottles per week, supplier links, manual price snapshot dates, affiliate/plain-link status, estimated restock timing, and email delivery status so the recipe and shopping list can be delivered.

Recipe emails are sent from support@carbengine.com through Resend when provider credentials are configured. Resend processes the recipient email address and message content only to deliver the requested recipe email.

Pro early access is mailto interest only and does not create a CarbEngine account or paid subscription.

Cookies and tracking

The current app does not require a login and does not intentionally set CarbEngine account cookies for the free calculator.

CarbEngine stores an anonymous visitor ID in local storage and an anonymous session ID in session storage. These IDs help count repeat visitors and sessions during private beta testing.

CarbEngine does not currently use Google Analytics, Meta pixels, third-party analytics, affiliate tracking, advertising pixels, live-price tracking, or automated restock reminder scheduling.

Planned future tools

Automated reminder scheduling, saved recipe accounts, Pro accounts, and Coaching accounts are planned later. CarbEngine should update this Privacy Policy before those tools collect or store additional personal information.

US-only availability

CarbEngine is currently available for users in the United States only. The current policy is written for that US-only launch scope.