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Kindler Dev

App · Mac

Drop-E Check — Privacy Policy

Last updated: October 22, 2026

Drop-E Check processes selected invoices on your Mac. Invoices, extracted data and validation results are not sent to me. There is no app account, analytics, tracking or advertising. Only information you submit through the feedback form is sent to me.

Controller

Björn Kindler
Kindler Dev
Bischofshofener Str. 9
82008 Unterhaching, Deutschland
Phone: +49 89 62084444
Email: info@kindler-dev.de

Invoices and local processing

The app reads only invoices you select or drop. It checks PDF/A-3 and embedded invoice data locally on your Mac.The app does not upload invoice files, invoice contents or validation results to my server. If a file you select is stored in iCloud Drive, macOS may first download it from Apple according to your settings.

Link to Drop-E

When you click “View Drop-E”, the app may query Apple's public App Store catalog for Drop-E or open its Store page. Apple receives data needed for the connection, such as your IP address. No invoice data is sent. Apple's privacy policy applies to the App Store.

Feedback form in the app

In the info area of Drop-E Check you can report a bug, suggest a feature or send a general message. The form is only sent when you click “Send”. It then transmits, encrypted with TLS:

Using the form is voluntary. You can use the app without restriction if you do not send a message. Name and email address are optional. Without an email address, I cannot reply to you personally.

  • the type of request and your message,
  • your name and email address, if you enter them (both optional),
  • the app’s identifier (bundle ID), its version number and the version of your operating system. The form shows these details before sending. No device identifiers, location or usage data are transmitted.

The recipient is my own server whisper.kindler-dev.de, hosted by Hetzner Online GmbH in Germany. It stores the submission and notifies me by email through my own mail server in the EU. From there I transfer it into the customer records on my computer. To limit requests, the server stores your IP address only as a salted hash. Nothing is transferred to third countries or to AI services.

The legal basis is Art. 6(1)(b) GDPR (handling your request) and Art. 6(1)(f) GDPR (my legitimate interest in fixing bugs and improving the app).

Retention: submissions on the server and unassigned entries in my customer records are deleted after 180 days. I delete the notification email manually within 180 days. If your feedback turns into a conversation with you, I keep that correspondence for as long as legal obligations require. Backups expire with their normal rotation.

After sending, the app shows a receipt number. With it or your email address you can request information or deletion at any time: info@kindler-dev.de. You can also email me directly instead of using the form.

Your rights and further information

You can request access, correction, erasure, restriction, portability or object to processing via the email above. You can also complain to a data protection authority. Details on your rights and visits to the website are in thewebsite privacy policy.