Privacy Policy for the “Karto” app
Last updated: November 13, 2026
Controller
Jacob von ZimmermannRondeel 19
22301 Hamburg
Email: jvz@gmx.de
In short
Karto does not collect data. Everything you enter or scan in Karto stays on your device. I have no access to it.
What Karto processes
Karto stores on your device:
- your own business card (for example name, job title, company, phone, email, website, address),
- the business cards you collect, with your notes,
- photos of scanned paper cards.
This data leaves your device only when you share it yourself, for example by showing your QR code or sending a card through the share sheet.
Camera and photos
Karto uses the camera to scan QR codes and paper cards. The text on a card and its industry are recognized on the device. Images are not sent to me or to third parties. If you choose an existing photo, Karto receives only that one image.
No account, no analytics, no ads
Karto needs no user account. The app contains no analytics tools, no advertising, and no third-party services.
Backup by Apple
If iCloud Backup is turned on for your device, Karto's data may be part of that backup. Apple's privacy terms apply to it.
Other people's cards
The cards you collect contain other people's data. You store them on your device for your own purposes and are responsible for how you handle them.
Deleting
You can delete any card in the app. Deleting the app removes all of Karto's data from the device.
Your rights
Because I do not receive or store any of your data, I cannot provide, correct, or delete it. For privacy questions, write to the email address above.
Changes
If the app changes so that data leaves the device, I will update this policy beforehand.