Cookie Policy
Last updated: April 8, 2026
What Are Cookies
Cookies are small text files placed on your device when you visit a website. They help the site remember your preferences and understand how you use it. We also use similar technologies such as localStorage and sessionStorage.
Kreisler uses cookies only to support our educational product. We do not use advertising or marketing cookies, do not embed third-party ad trackers, and do not participate in cross-site tracking.
How We Use Cookies
Essential Cookies
These cookies are necessary for the website to function properly. They enable basic features like session management and security.
| Name | Purpose | Duration | Type |
|---|---|---|---|
| kreisler_session | Maintains authenticated session | Session | HTTP |
| kreisler_csrf | CSRF protection | Session | HTTP |
| kreisler_consent | Stores cookie consent preferences | 1 year | localStorage |
| kreisler_lang | Remembers language preference | 1 year | localStorage |
Analytics Cookies
With your consent, we use analytics cookies to understand how visitors interact with our website. All data is aggregated and anonymous.
| Name | Purpose | Duration | Type |
|---|---|---|---|
| kreisler_analytics_id | Anonymous usage identifier | 1 year | localStorage |
| kreisler_perf | Page load and interaction timing | Session | sessionStorage |
Personalization Cookies
These cookies enable enhanced functionality and personalization, such as remembering your theme preference.
| Name | Purpose | Duration | Type |
|---|---|---|---|
| kreisler_theme | Light/dark/system theme preference | 1 year | localStorage |
| kreisler_practice_prefs | Tempo, instrument, difficulty settings | 1 year | localStorage |
| kreisler_recent_pieces | Recently accessed pieces | 30 days | localStorage |
How to Control Cookies
You can control and delete cookies through your browser settings:
- Google Chrome: Settings > Privacy and Security > Cookies
- Mozilla Firefox: Settings > Privacy & Security > Cookies
- Safari: Preferences > Privacy > Manage Website Data
- Microsoft Edge: Settings > Cookies and site permissions
Note that disabling essential cookies may affect the functionality of the website.
Changes to This Policy
We may update this cookie policy from time to time. If we make significant changes, we will re-request your consent where required by law.
Contact
If you have questions about our use of cookies, please contact us at privacy@kreisleriana.com.