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Privacy Policy

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ChronoLink is a service operated by Bannmann Software, Dortmund, Germany. This privacy policy will explain how our organization uses the personal data we collect from you when you use the ChronoLink application.


Your account with ChronoLink.
The user interface at and the background service that performs the synchronization.
A calendar or similar entity that contains events and is accessible via a Linked Account.
Settings for how ChronoLink should synchronize events from a Source to a Sink.
Linked Account
An account that belongs to another System and that you linked to your ChronoLink account.
Source and Sink
A pair of Calendars configured for a Connection.
A service that provides Calendars and is operated by a third party.
The pages at

Data collection and use

What data do we collect?

When you visit the Website, no personal information is collected. In order to send the requested web pages and related assets (such as images) to you, the server needs to use your IP address, but it does not store it.

When you use the Application, we collect the following personal and non-personal data:

  • Personal identification information: email addresses and IDs of Linked Accounts.
  • Organization data: ID or internet domain name of the organization a Linked Account belongs to (if any)
  • Connection settings: name, IDs of Source and Sink, iCalendar source address (if applicable), condition and transformer configuration
  • Credentials for Linked Accounts: OAuth tokens (Google & Microsoft), login and API key (Clockodo)

When running a Connection, the Application stores the number of events that are found in the Source and of those that are written to the Sink.

Being built on the principle of data minimisation, the Application does not store any information that is not strictly required to perform its function:

  • It does not store event data.
  • It does not store the names and details of Calendars.
  • It does not store your name.

When you create support requests via our support portal or by sending emails to, we store the information you provide.

How do we collect your data?

The Systems you link to ChronoLink provide most of the data that we collect. We collect data from these Systems when:

  • You create a ChronoLink Account using a Google or Microsoft account.
  • You link a Google or Microsoft account as a login option.
  • You link a Google, Microsoft or Clockodo account to make their Calendars available for your Connections.
  • You create or edit a Connection.
  • At regular intervals, we contact the respective System to verify a Linked Account still exists and the data we stored previously is up-to-date.

Additionally, some data is collected directly from you when:

  • You create or edit a Connection.

What data do we access temporarily?

Some data from Systems you linked to ChronoLink is accessed only when needed and immediately discarded without storing:

  • When you open the ChronoLink configuration page, we access the following data for display purposes:

    • Names and details of Calendars
    • Names of Linked Accounts
    • Names of organizations the Linked Accounts belong to (if any)
  • When a Connection is run, we access the following data in order to perform the synchronization:

    • Events in the respective Source and Sink, including those marked as deleted.
    • Details about the respective Source and Sink such as time zone or default event color.

How will we use your data?

ChronoLink collects your data so that we can:

  • Provide the service and manage your Account.
  • Contact you in case of technical, security, billing or contractual issues.

If you signed up to participate in a product test, we will also:

  • Contact you to ask for help and feedback in further development of the service.

We do not share your data with third parties unless we are required to do so by applicable law.

Where and for how long do we store your data?

ChronoLink securely stores your data within the European Union at datacenters in Germany.

We will store your data only for as long as is necessary for the purposes set out in this Privacy Policy.

We will store and use your data to the extent necessary to comply with our legal obligations (for example, if we are required to retain your data to comply with applicable laws), resolve disputes, and enforce our legal agreements and policies.

What are your data protection rights?

If you live in the European Economic Area

If you live in one of the states forming the European Economic Area (the European Union plus EFTA states Iceland, Liechtenstein and Norway), you are protected by the GDPR. It does not matter whether you are a citizen of that state.

Specifically, you are entitled to the following:

The right to access
You have the right to request copies of your personal data from us. We may charge you a small fee for this service.
The right to rectification
You have the right to request that we correct any information you believe is inaccurate. You also have the right to request us to complete the information you believe is incomplete.
The right to erasure
You have the right to request that we erase your personal data, under certain conditions.
The right to restrict processing
You have the right to request that we restrict the processing of your personal data, under certain conditions.
The right to object to processing
You have the right to object to our processing of your personal data, under certain conditions.
The right to data portability
You have the right to request that we transfer the data that we have collected to another organization, or directly to you, under certain conditions.

If you make a request, we have one month to respond to you. If you would like to exercise any of these rights, please contact us via email:

If you live outside the European Economic Area

Although the GDPR does not grant protections to people living outside the EEA member states, we treat the data of all our users just as if it did. Refer to the section above for details.


What are cookies?

Cookies are text files placed on your computer that have a variety of uses. They are required for logging in to most websites, but unfortunately, they are often also used to track visitor behavior across different websites.

For further information, visit

How do we use cookies?

When you log in to the Application, we use a cookie to remember who you are. As we do not use cookies for other, non-essential purposes, there is no need to acquire your consent using a "cookie banner".

Our Website does not use cookies.

Other information

Changes to the privacy policy

We may update this privacy policy from time to time. When we do, we will let you know in advance via email.

How to contact us

If you have any questions about ChronoLink’s privacy policy, the data we hold on you, or you would like to exercise one of your data protection rights, please do not hesitate to contact us.

Email us at:

For our mailing address, refer to our Imprint.

How to contact the appropriate authority

Should you wish to file a complaint or if you feel that we have not addressed your concern in a satisfactory manner, you may contact your local data protection authority.

If you live in the European Economic Area, you can find the appropriate authority in the members directory of the EDPB (European Data Protection Board).