Privacy Policy

General information

The following information will provide you with an easy to navigate overview of what will happen with your personal data when you visit this website. Personal data includes all data that can be used to personally identify you.

Who is the responsible party for the recording of data on this website?

The data on this website is processed by the operator of the website. The contact details are:

Vercel (Frontend & Analytics)

We host our frontend on Vercel. The provider is Vercel Inc., 340 S Lemon Ave #4133, Walnut, CA 91789, USA. When you visit our website, Vercel collects various log files including your IP addresses. We also use Vercel Analytics and Speed Insights to analyze the performance and usage of our website. The data collected is anonymized and does not allow direct conclusions to be drawn about your person. We have concluded a data processing agreement (DPA) with Vercel to ensure GDPR compliance.

Render (Backend & Database)

We host our backend and database via Render. The provider is Render Services, Inc., 525 3rd Street, Suite 200, San Francisco, CA 94107, USA. If you use our application, mathematical calculations and user data are processed via the Render API and stored securely in a PostgreSQL database. We have concluded a DPA with Render.

User Accounts, Registration & App Usage

You can register an account on our website to save your calculations and data. We use the data entered exclusively for the purpose of providing the service for which you have registered. The required information requested during registration (e.g., email address, encrypted password) must be provided in full.

• Authentication: We use JWT (JSON Web Tokens) and bcrypt for secure authentication and password hashing.

• Cloud Data: The data you input for mathematical computations is stored securely in our database so you can access it across your devices.

The processing of the data entered during registration occurs based on your consent (Art. 6(1)(a) GDPR) and to fulfill our service provision (Art. 6(1)(b) GDPR).

Contacting us

If you contact us via email or phone, your inquiry, including all resulting personal data, will be stored and processed by us for the purpose of processing your request. We do not pass on these data without your consent.