masterivo.

Delete your account and data

Last updated: 5 November 2026.

This page applies to all apps by Masterivo (provider: Matthias Wolfgang Beurer, see legal notice) – on Google Play, on the web and on other devices:

FiBu to go (Google Play: “FiBu to go: Buchhaltung IKR”) – fibu.masterivo.com
FiBu für Büromanager – büro.masterivo.com
English Mastery Trainer – english.masterivo.com
German Mastery Trainer – german.masterivo.com
French Mastery Trainer – french.masterivo.com

Request deletion – without the app

Send an e-mail to support@masterivo.com – please from the e-mail address of your account, so that nobody can have someone else’s account deleted.
Subject: “Konto löschen / Delete account” and the name of the app, e.g. “Delete account: English Mastery Trainer”. If you use several apps, name every app whose account should be deleted.
We delete your account and the related data and confirm the deletion by e-mail. Deletion requests are always handled by a person, not by the AI assistant of our mailbox. If we cannot match the request to an account, we will ask you.

Open a ready-made e-mail (subject and text already filled in):

No e-mail program opens? Simply write to support@masterivo.com with the subject “Delete account” and the app name.

Running subscription or free trial?

Deleting your account is not a cancellation. Please cancel a running subscription or free trial of the language trainers first – in the app or on the app’s website via “Cancel contracts here” (no sign-in needed) – or write in your deletion e-mail that you also want to cancel. The same applies to a running test day of the FiBu apps. Otherwise FiBu passes end automatically; there is nothing to cancel.

Delete it yourself in the app

Every app with a user account has its own delete function. It takes effect immediately:

FiBu to go: FiBu to go has no user account with a password. Your learning progress is stored only on your device. In the app (in German) under „Ich“ → „Deine Daten“ → „Alle meine Daten auf diesem Gerät löschen“ you can delete it yourself.
FiBu für Büromanager: In the app (in German) under „Ich“ → „Konto und Daten löschen“. Your learning progress is stored only on your device and is kept; you remove it by deleting the app or the site data in your browser.
English Mastery Trainer: In the app under “Profile” → “Privacy and your data” → “Delete cloud account” (two confirmations). Before that you can “Export all cloud data” there.
German Mastery Trainer: In the app under “Profile” → “Privacy and your data” → “Delete cloud account” (two confirmations). Before that you can “Export all cloud data” there.
French Mastery Trainer: In the app under “Account” → “Delete account”. Before that you can download your data there (JSON). Your progress in this browser is kept until you delete the site data.

Which data is deleted – and which is kept

Whatever is kept is required by law (e.g. invoices) or protects against misuse. The periods are listed in each app’s privacy policy.

FiBu to go

Deleted: On request we delete the data our licence service has stored for your e-mail address (for example details of a test day, consents).

Kept:

Purchase data (e.g. invoice, payment) is kept by Dodo Payments as the seller under its own responsibility, as required by law.
An irreversible check value (hash) of your e-mail address so that the test day can only be used once: 12 months.
Cancellation and withdrawal notices as proof until the limitation period ends (usually three years from the end of the year of the notice).

FiBu für Büromanager

Deleted: Your e-mail address, your review and your consents on our server; you are then signed out.

Kept:

Billing data at Dodo Payments (or purchase data at Apple) stays there as required by their legal obligations.
Access through a training provider: the seat stays taken but is no longer linked to a person.
Trial access: a check value (hash) of your e-mail address for up to 12 months after the trial ends.
Cancellation and withdrawal notices as proof until the limitation period ends (usually three years from the end of the year of the notice).

English Mastery Trainer

Deleted: Account and profile data, archived sessions, cloud backups, usage counters and the records of sent tip e-mails and of an objection to them.

Kept:

Billing records as required by tax law.
If you used the free trial: only a pseudonymised check value (HMAC hash) of your e-mail address and the deletion date, for 3 years after deletion.
Cancellations as proof until the statutory limitation period ends.

German Mastery Trainer

Deleted: Account and profile data, archived sessions, cloud backups and usage counters.

Kept:

Billing records as required by tax law.
If you used the free trial: a pseudonymised check value (HMAC hash) of your e-mail address; it is deleted 3 years after the trial started.
Cancellations as proof until the statutory limitation period ends.

French Mastery Trainer

Deleted: Account, sign-in sessions, profile, backups, history and usage counters. You receive a confirmation by e-mail.

Kept:

Billing records as required by tax law.
If you used the free trial: a pseudonymised check value (HMAC hash) of your e-mail address, for 3 years after deletion.
Proof of cancellations and withdrawals until the statutory limitation period ends.

Other data

Messages sent via “Feedback & report a problem” are deleted once they are dealt with, after 12 months at the latest.
Short feedback (“reviews”): unpublished feedback after 12 months; published feedback is removed from the website when you withdraw your consent.
Your e-mails to us are deleted once they are no longer needed and no legal retention obligations apply.

Your rights

Among other things you have the right to erasure (Art. 17 GDPR) and to access. Details are in the privacy policy of masterivo.com and in the privacy policy of each app.