Cookie Policy
Last updated: February 10, 2026
This page explains how cookies and similar technologies are used on SystemDesign Pro.
- Essential cookies are required for authentication and secure session management.
- Payment-related cookies may be set by checkout providers during purchase flow.
- If additional categories are introduced, this policy will be updated.
1. What Are Cookies
Cookies are small text files placed on your device to keep the site secure, remember preferences, and support core product functionality.
2. Cookies We Use
| Category | Purpose | Status |
|---|---|---|
| Essential | Authentication, session continuity, security controls | Active |
| Billing/session | Secure checkout and purchase integrity | Active during checkout |
| Analytics/performance | Reliability and product usage insights | May be introduced later |
3. Third-Party Cookies
Some cookies are set by providers that run core platform functions, such as authentication and payment processing.
4. Similar Technologies
We may use related technologies such as local storage or server-side session tokens where necessary for secure sign-in, premium access state, and simulation resume behavior.
5. Managing Cookies
You can control or delete cookies from your browser settings. Disabling essential cookies may prevent login, checkout, or premium access from working correctly.
6. Related Policies
See also our Privacy Policy and Terms of Service.
7. Contact
Cookie questions: support@systemdesignpro.dev
General support: support@systemdesignpro.dev