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Privacy Policy

Last updated: January 2026

1. Responsible Party

Responsible for data processing on this website:

Kai Kolnsberg
Email: kai.kolnsberg@t-online.de

2. Data We Collect

When you sign up for our waitlist, we store:

• Your email address
• Timestamp of registration

3. Purpose of Data Processing

We use your email address exclusively to notify you about the launch of Spark and to occasionally send you development updates.

4. Legal Basis

Processing is based on your consent according to Art. 6 (1) (a) GDPR. You can withdraw this consent at any time.

5. Storage Duration

We store your data until the launch of Spark or until you request deletion. After launch, waitlist data will be deleted unless you create a user account.

6. Data Processors

We use the following services for data storage:

• Supabase Inc. (USA) - Database hosting. Supabase is GDPR compliant and uses servers in the EU.
• Cloudflare Inc. (USA) - Website hosting. Cloudflare is certified under the EU-US Data Privacy Framework.

7. Your Rights

You have the right to:

• Access your stored data
• Rectification of incorrect data
• Deletion of your data
• Withdraw your consent
• Lodge a complaint with a supervisory authority

8. Contact

For questions about privacy or to request deletion of your data, contact us at: