Cookies & local storage

Your choice

Chat works without persistent memory. Conversations are stored locally for later visits only when you actively enable it. You can decline or enable it; the website remains usable. There are no analytics, marketing or external AI services. Your choice for private memory is not consent to publicly share a question or publish a review.

“Necessary only” leaves optional memory off and deletes existing memories. “Select all” marks the optional choice without saving it yet. “Accept selection” applies your current choice. “Accept all” enables the only current optional storage purpose: private astronaut memory. You can withdraw consent at any time through cookie settings in the footer. This choice does not permit publication of reviews or knowledge suggestions.

Necessary: storage preference

arethra_cookie_consent stores your choice, notice version and timestamp locally. The choice applies for up to 180 days. On expiry or a new notice version you are asked again; without renewed consent, private memory is no longer used and is removed on next access. Necessary storage of your decision is based on Section 25(2)(2) TDDDG and, for personal data, Article 6(1)(f) GDPR, based on our interest in respecting your choice. No background deletion takes place while the website is closed.

Optional: private chat memory

Only with your active consent does private memory store questions, answers, language, any topic reference and timestamps in local browser storage under arethra_assistant_memory_v1. It retains up to 50 question-and-answer pairs, each for 90 days from storage, to continue your conversation in the same browser. The content is not sent to Arethra or an AI provider and is not shared with other visitors or devices. No model training takes place. The legal bases are Article 6(1)(a) GDPR and Section 25(1) TDDDG.

Use “Delete history” to remove saved conversations. “Turn off and delete” withdraws consent and also deletes memory. You can also uncheck memory in cookie settings and save your choice. “Export” downloads your memories as a file; you must delete this downloaded copy separately if needed. Chat remains available. Expired entries are cleaned up on next storage access and are no longer used; a closed website cannot delete browser data in the background. On shared devices, other people using the same browser profile may see the content. Please do not enter passwords, health data or confidential information about other people.

Astronaut position and language

After you move the astronaut, arethra_assistant_position stores its screen position in the tab's session storage. This requested function falls under Section 25(2)(2) TDDDG. The entry contains no chat content and ends with the session; the browser may restore it when restoring a session. No movement profile is created. Language follows the language version you visit and requires no additional storage entry. An old arethra_intro_seen entry is removed.

Reviews and shared knowledge

A voice recording starts only after your click and microphone permission. Reviews and selected knowledge suggestions are sent to the server only after separate consent. These data are separate from private memory and are not erased by disabling it. For knowledge suggestions, use the deletion code and deletion function in the privacy notice or contact us. For reviews write to kontakt@arethra.de. Further details are in the privacy notice.

Administration sign-in

Only the protected administration area requires sign-in. The necessary arethra_admin_session cookie confirms an authorised session for up to eight hours and is removed on sign-out. It secures access and does not analyse visitors (Section 25(2)(2) TDDDG; Article 6(1)(f) GDPR, based on the interest in protecting non-public content). Public content, chat, reviews and knowledge suggestions require no account.

Arethra Flow

The demo stores sample data only locally in this browser. The customer area uses local storage for sign-in. You can end this session by signing out or by deleting the website data.

Change settings

You can change your choice at any time through Cookie settings in the footer or the button on this page. You can also delete all local website data in your browser. You can pause the animation and reset the astronaut's position directly in chat.

Last updated: 30 September 2026.