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Deleting your account

Last updated 1 August 2026

On this page

  1. How to delete your account
  2. What is deleted
  3. What stays, and why
  4. Your other rights

How to delete your account

Open the app, go to Settings, tap your name at the top, then Delete my account. The screen you land on lists exactly what goes and what stays, and asks you to confirm.

It takes effect immediately. You do not have to write to us, and you do not have to explain why.

If you no longer have the app, write to contact@castoflasher.com from the address the account uses and we will do it for you. We answer these in writing, normally within two working days, and we do not charge for them.

What is deleted

Your name and your email address.

Your cars, everything the app read from them, and the files that were prepared for them.

Every device the account was signed in on, so the app signs out everywhere.

If you signed in with Apple, we also tell Apple, so the link between your Apple account and this app is removed.

What stays, and why

Anything already installed on your car keeps working. Nothing about deleting an account reaches a car, and nothing is undone by it.

Invoices are kept for seven years, because Austrian tax law requires it. Each invoice carries its own copy of the billing details, so it stays readable after the account it belonged to is emptied. Download the ones you want before you delete the account, or ask us for them afterwards.

The account record itself is emptied rather than removed, for the same reason: an invoice has to keep pointing somewhere. What is left in it does not name you.

Your other rights

You can ask for a copy of what we hold, ask for it to be corrected, and complain to a supervisory authority. In Austria that is the Datenschutzbehoerde. Our privacy notice sets out the rest.

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BMW, M, the BMW logo, the M logo and all model names are registered trademarks of Bayerische Motoren Werke Aktiengesellschaft, Munich, Germany. Casto Flasher is an independent product of ZL Software GmbH and is not affiliated with, authorised by, endorsed by, or in any way officially connected to Bayerische Motoren Werke AG or any of its subsidiaries. All product names, trademarks and registered trademarks are the property of their respective owners and are used here only to describe compatibility. MHD and MHD Tuning are trademarks of their respective owner.

Changing what your car does is your decision and your responsibility. Some features may not be permitted for road use in every country. Check the rules where you drive.

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