Privacy Policy

1. Controller

Controller within the meaning of the GDPR:

Thiel, Thomas und Gerhold, Frank GbR
Mariendorfer Str. 7, 34127 Kassel, Germany
Email: kontakt@mdo-beratung.de
Tel: +49 163 8907380

2. Principles of data processing

We process personal data only to the extent necessary to provide our services. We do not sell personal data or use it for third-party advertising purposes.

3. Data we process

3.1 Account data (on registration)

Upon registration we store:

• Email address (required for authentication)
• WhatsApp number (optional, to extend the Pro trial by 7 days to 14 days total)
• Login timestamps and method (Magic Link, Google)
• Licence tier (Free / Plus / Pro)

Legal basis: Art. 6(1)(b) GDPR (performance of contract).

3.2 Constellation boards (content data)

Your boards are stored locally in your browser (IndexedDB) and are not transmitted to servers. We have no access to your constellation content.

3.3 Technical log data

When you access our website, the hosting provider Cloudflare automatically records: IP address, date/time, requested URL, browser type, operating system, referrer. Legal basis: Art. 6(1)(f) GDPR.

3.4 Theme and language preferences

Your choice of light/dark mode and preferred language is stored in your browser's localStorage (keys: syslia-theme, systembrett-settings). This data remains locally on your device.

3.5 Chat assistant (landing page)

The chat assistant in the bottom-right corner answers questions without requiring sign-in and without storing a conversation history on our side. So that follow-up questions are understood, your browser sends the most recent messages of this conversation with each message; they are kept only in the page's memory (not in cookies or local storage) and disappear when you close or reload the page. Your message together with this history is transmitted to MiniMax for the purpose of answering it (see section 4). To prevent abuse, each message undergoes a security check (Cloudflare Turnstile) and the number of messages per visitor is counted for a short time — for this, your IP address is irreversibly encrypted (hashed) with a secret additional value and automatically deleted after a few hours; it cannot be traced back to your actual IP address. Legal basis: Art. 6(1)(f) GDPR (abuse prevention).

If a question cannot be answered with confidence, you may voluntarily leave an email address so our team can get back to you. If you forward your question to our team, we also store the chat history so far with your request so the team knows the context; this only happens when you trigger it and is shown to you beforehand. This information is used exclusively to respond to your request. Legal basis: Art. 6(1)(b) GDPR.

3.6 Backlink exchange program (voluntary participation only)

Customers on the Standard plan or higher may voluntarily join the backlink exchange program in their profile. If you participate, we publish the site name and website address you provide on syslia.de/unsere-kunden. The address you provide is checked automatically and regularly (currently monthly) to confirm it still links back to syslia.de. If no backlink is found any more, you receive an email after internal review and the listing is removed. You may leave the program at any time in your profile. Legal basis: Art. 6(1)(a) GDPR (consent).

3.7 Device management (one active access per licence)

Each licence allows use on one device at a time (further concurrent access via additional licences). To implement this, we store for each signed-in device a randomly generated device identifier (in your browser’s local storage), a rough device label from browser and operating system (e.g. “Chrome · Windows”), the identifier of the sign-in session and the times of sign-in and last activity. While in use, the app contacts the server about once per minute for this purpose. You can see this information yourself in your profile under “Access & additional licences”. It is deleted together with your account. Legal basis: Art. 6(1)(b) GDPR (performance of contract – compliance with the licence terms).

3.8 Language of address and system notifications

So that we can address you in your language, we store your language setting together with your account: the language code (e.g. “en”), the source (chosen by you, taken from a form, or from your browser language setting) and the time. The app reports the language automatically after sign-in; a deliberate choice in the app takes precedence. We use it exclusively for service notifications about your account, such as the confirmation of an activation, a purchase or an extension, and the reminder before an activation expires. These emails go only to the confirmed address of your account. As proof, we store the wording, time and trigger of each notification for as long as your account exists; they are deleted together with your account. This is not advertising. Legal basis: Art. 6(1)(b) GDPR (performance of the contract). For advertising (newsletter, offers) only your explicit consents apply.

3.9 Change log of your account

Every change to your plan, your figure sets and your activations (e.g. purchase, extension or activation by our team) is logged with the time, the service concerned, the trigger (payment provider, server or a member of our team) and, where applicable, the reason, so that we can prove your rights and clarify errors. Legal basis: Art. 6(1)(b) and (f) GDPR. The log entries are deleted when your account is deleted; statutory retention obligations for payment records remain unaffected (they concern the payment provider Paddle).

4. Third-party services

5. Cookies, local storage and audience measurement

We use no advertising or profiling cookies. Technically necessary storage:

• localStorage (syslia-theme): Theme preference — no server access
• localStorage (systembrett-settings): Language preference — no server access
• IndexedDB (systembrett-*): Boards locally — no server access
• Supabase Auth Cookies: JWT (1h) + refresh token — technically necessary
• localStorage (syslia-consent): your choice in the consent banner (only while the banner is active) — no server access

Legal basis: Art. 6(1)(f) GDPR, § 25(2) TDDDG.

Audience measurement of the website (not in the app)

On the public pages of syslia.de – expressly not in the app, where you work with your constellations – we may evaluate usage statistically in order to improve content and understand how visitors find us. Two services may be used. Whether they are active and whether they require your consent is shown by the consent banner and by the “Cookie settings” entry in the page footer:

• Ahrefs Web Analytics (Ahrefs Pte. Ltd., Singapore): counts page views, referring page, country and device type. According to the provider, the service works without cookies and without profiling. Depending on our configuration it is used either on the basis of our legitimate interest in audience measurement (Art. 6(1)(f) GDPR) or only after your consent in the banner (Art. 6(1)(a) GDPR, Section 25(1) TDDDG).
• Google Tag Manager (Google Ireland Limited, Ireland; parent company Google LLC, USA): is loaded only after your consent. Loading transmits your IP address to Google, including to the USA (legal basis: your consent, Art. 6(1)(a) and Art. 49(1)(a) GDPR, Section 25(1) TDDDG). The Tag Manager manages measurement scripts (e.g. Google Analytics); storage for advertising purposes remains denied (Consent Mode).

We store your choice locally in your browser. You can withdraw or change it at any time via “Cookie settings” in the page footer; a withdrawal applies for the future.

6. Retention periods

• Account data: Until account deletion
• Boards (local): Until manual deletion
• Auth tokens: JWT 1h, refresh until logout
• Server logs: Max. 30 days
• Chat abuse-prevention (IP hash): A few hours, automatic
• Payment data: 10 years (§ 147 German Fiscal Code)

7. Your rights (Art. 15–22 GDPR)

You have the right of access, rectification, erasure, restriction, data portability and objection. To exercise your rights: kontakt@mdo-beratung.de or our GDPR request form.

You also have the right to lodge a complaint with a supervisory authority: bfdi.bund.de

8. Data security

All transmissions are exclusively via HTTPS (TLS 1.3). Passwords are not stored (passwordless authentication via Magic Link).

9. Minors

Our service is intended for adults. We do not knowingly collect data from persons under 16 years of age.

10. Changes

We reserve the right to update this policy. The current version is always available at syslia.de/datenschutz.

Updated: 10 October 2026  ·  Imprint  ·  Disclaimer  ·  GDPR Request