Provider (Impressum)

Blocksize One UG (haftungsbeschränkt)
Oberstr. 3, 47829 Krefeld, Germany
Handelsregister: HRB 21178 (Amtsgericht Krefeld)
USt-IdNr: DE456304266
Managing Director: Holger Köther
Contact: [email protected]

Other Apps by Blocksize One

Father Leo — Your daily Bible companion for iOS.

VoyVoy — Travel currency converter for iOS.

Data We Collect

Images

Images you submit for extraction are transmitted via HTTPS to our backend service hosted on Cloudflare Workers, which forwards the image to Anthropic (Claude vision) for analysis. The extracted event data is returned to your device.

We temporarily retain extraction logs for up to 14 days to debug issues and improve service quality. After 14 days, image data is automatically deleted. Anonymized metadata (success rates, response times, error types) may be retained longer for analytics.

iCloud Integration

We use Apple's CloudKit framework to enable cross-device subscription synchronization. Here's how it works:

Data Storage

Your Pro subscription status (active / expired) and the originating transaction ID are stored on our servers, linked to your anonymous device identifier and (if signed into iCloud) your anonymous iCloud identifier. Subscription transactions are verified cryptographically against Apple's App Store Server API and the Apple Root CA G3 certificate chain.

Purchases

In-app purchases are processed by Apple. We store transaction IDs to prevent duplicate processing.

Service Usage Data

When you use the App, we collect:

This data helps us improve the service and troubleshoot issues.

Data We Do Not Collect

We do not collect:

Extraction history is stored locally on your device.

Third Parties

Provider Purpose Location
Anthropic AI extraction (Claude vision model) United States
Apple Payments and StoreKit subscription verification United States
Cloudflare Backend hosting Global

Data Retention

Extraction logs: Images and extraction data are automatically deleted after 14 days. Anonymized metadata (success rates, error types) may be retained longer for service improvement.

Subscription data: Subscription status and transaction history are retained for as long as needed for purchase verification and customer support, and as required by tax and accounting law.

Delete your data: Email [email protected] to request deletion of your subscription record.

International Transfers

Data may be transferred to the United States via Anthropic and Cloudflare, protected by Standard Contractual Clauses.

Your Rights (GDPR)

Under GDPR, you may request access, correction, or deletion of your data by contacting [email protected]. Given our minimal data collection, there is limited data to act upon.

Supervisory Authority

Landesbeauftragte für Datenschutz und Informationsfreiheit NRW
Postfach 20 04 44, 40102 Düsseldorf, Germany
https://www.ldi.nrw.de

Changes

We may update this policy. Continued use constitutes acceptance.

Contact

For privacy inquiries: [email protected]