End User privacy notice

We will process the personal data in compliance with the German Federal Data Protection Act (Bundesdatenschutzgesetz/BDSG), the German Teleservices Act (Telemediengesetz/TMG), and the General Data Protection Regulation of the European Union (Datenschutzgrundverordnung/GDPR).

Collection of personal data when using our application

You can use the Smartfit Online Sizing Widget on one of our partner websites without registering for our service. You can use the application on our partner websites in order to get size recommendations for bicycles. In order to receive a size recommendation for a specific bike, you can submit the following information through the application:

  • Gender (mandatory)
  • Height (mandatory)
  • Leg Length (optional)
  • Arm Length (optional)
  • Ride Style Preference (optional)

Our application calculates a specific size recommendation for a bicycle by using algorithms which find the correct bike size based on your anthropometric data, your gender and your ride style preference. In some cases you can pass your preferred bike size from the application to your personal shopping basket in the partner’s web shop via a button on the result screen of our widget.

Usage of personal data from our application

We will use your personal data from the application solely for the following purposes:

  • Recommendation of bike sizes in real-time.
  • Providing fit prediction services in our partners’ online shops.
  • Optimizing the overall quality of our recommendation mechanisms.
  • Statistical analysis of the number of bike sizings over time.

All personal data is processed anonymously and we never collect or process any personally identifiable information (e.g. real name, address details, payment information). All data is stored on servers and databases located either in Frankfurt, Germany or in Nuremberg, Germany. No data is transferred outside of the European Union. All data is automatically deleted after a certain retention period.

We are not using any data at all for marketing or advertising purposes.


We are using a local storage cookie to store the following information:

  • Gender (mandatory)
  • Height (mandatory)
  • Leg Length (if provided by the user)
  • Arm Length (if provided by the user)
  • Ride Style Preference (if provided by the user)

We will store these data together with a session identifier in your local storage. The cookie is considered necessary for technical reasons. Without the cookie the Online Sizing Widget cannot be reasonably used. Using the cookie we can identify recurring users so that you do not have to re-enter your basic information when using the application again. The token (JWT) will be renewed after a user has been inactive for 4 hours.

In some cases, the cookie allows the immediate display of size recommendations on the product detail pages of our partners’ web shops without using the application again. In some cases, our application transmits the recommended size to a partner shop (i.e. so that the recommended size is automatically selected in a dropdown on the product page). If the Smartfit Recommendation Engine Feature is enabled, you do not have to re-enter your basic information with the recommended bikes which are being displayed in new browser tabs.

Safety and Security

We use suitable technical and organizational safety measures to protect your data from accidental or intentional manipulation, partial or complete loss and/or destruction as well as unauthorized access. Our security measures are subject to continuous improvement in accordance with current technological developments.