Privacy Policy

Last updated: 20 October 2026 · version 6

1. Controller

Kwant Software is the trade name of Björn Billooye, sole proprietorship with registered office at Nederwijk 242, 9400 Ninove (Belgium), company number 1041.558.284. Kwant Software is responsible for the personal data that you provide via this website or directly. Quotations, agreements and invoices under a previous trade name of Björn Billooye remain valid unchanged.

Questions about this policy or your information: info@kwantsoftware.be. You will receive an answer within 30 days.

2. Which data, for what purpose and on what basis

• The application form sends your name and company, your question, your preferences and your contact details via Netlify Forms to Kwant Software. Netlify processes and stores the submission for delivery and spam filtering. Kwant Software receives the request by email. Purpose: to assess and respond to your request. Legal basis: pre-contractual measures at your request (Art. 6.1.b GDPR).
• For an assignment: also includes the information about your company and what you provide to build the app. Purpose: execution of the agreement (art. 6.1.b GDPR). Billing data is processed on the basis of a legal obligation (art. 6.1.c GDPR).
• Visit statistics: see points 5 and 6.
• Email, telephone and WhatsApp: what you send or communicate yourself. Legal basis: legitimate interest in normal business communication (Art. 6.1.f GDPR).

No data is sold, there is no newsletter, no profiling and no automated decision-making.

3. Retention periods

• Requests that do not lead to collaboration: 60 days after last contact.
• If you become a client: for the duration of our collaboration, then for as long as legally required. Invoices and accounting records are retained for 10 years in accordance with applicable tax retention periods.
• Ordinary correspondence: maximum 2 years after the last contact.

4. Service providers

If you choose a separate WhatsApp contact link, your message will be sent through WhatsApp (Meta Platforms Ireland), according to WhatsApp terms and privacy policy. If you would rather not do this, please use the email form or email directly to info@kwantsoftware.be.

Cloudflare provides the cookieless visitor counter (Cloudflare Web Analytics, point 6). Your IP address is only used to identify a country; it is not stored, and no code is created that recognizes you across visits or other websites.

Google Ireland provides the more extensive statistics (Google Analytics), and only after your permission via the cookie bar (points 5 and 6).

Kwant Software uses test data during development. Personal data you provide through the form, by email or for an assignment is treated confidentially and is not used as test data.

For the hosting of this website, for e-mail and for invoicing, Kwant Software uses external service providers with whom processing agreements apply. You will receive the current list upon request. If a service provider processes data outside the European Economic Area, this is done on the basis of an adequacy decision or standard contractual clauses from the European Commission. Google may process data in the United States, under the EU-US Data Privacy Framework.

5. Cookies and Local Storage

On your first visit, the site chooses its language based on your browser settings. If you choose a language yourself, that preference is saved on this device in local storage (kwant-language) until you choose another language or clear your browser data.

This site uses two types of storage in your browser:

• Necessary storage: your cookie choice itself, and the setting with which a device is kept out of the statistics. That information does not leave your device and does not request permission.
• Statistics cookies: Google Analytics (point 6). They become only posted after your permission in the cookie bar. If you refuse, nothing will be posted and the site will work exactly the same.

Which cookies these are and how long they remain:

• _ga and _ga_… (Google Analytics): distinguish between visitors and visits; up to 2 years.

The cookieless counter from point 6 is deliberately not included in this list: it does not put anything in your browser and does not read anything from it. Your choice will be remembered for twelve months and can always be revised via the link Cookies at the bottom of each page. The fonts are loaded from our own server, so that no data is sent to third parties.

6. Visit statistics

There are two measurements running on this site, and they work differently.

A cookieless counter (Cloudflare Web Analytics). It counts page views, which site you came from, which country, with which browser and on what device. It does not put anything on your device, does not read anything from it and does not follow you across other websites. Because nothing is placed or read in your browser, no permission is required for this. Legal basis: it legitimate interest from Kwant Software to know whether the site works and which pages people reach (art. 6.1.f GDPR). You can object with one email to info@kwantsoftware.be.

Google Analytics. Kwant Software measures how many visitors there are, which pages they view and how they enter. Cookies are placed and your IP address and your surfing behavior on this site are processed. No advertising profile is built up: there are no advertising pixels on this site and there is no remarketing. Legal basis: your permission (art. 6.1.a GDPR), provided via the cookie bar. Without this permission, Google Analytics will not be loaded; the cookieless counter will then continue to work, because it is independent of your choice. You can withdraw at any time via the link Cookies at the bottom of the page.

7. Apps that Kwant Software builds for customers

This policy concerns the data that Kwant Software processes itself. If you use an app that Kwant Software built or hosts for your employer or another company, that company is responsible for your data in that app. Kwant Software acts as processor there (general terms and conditions, Article 12). If you have any questions about this data, please contact that company first.

8. Security

Connections to this site are encrypted (HTTPS). Information you provide for an assignment will only be used for that purpose and will never be published without your permission.

9. Your rights

You have the right to inspect, correct, delete and portability of your data, the right to have processing restricted and the right to object to processing on the grounds of legitimate interest. One email to info@kwantsoftware.be is sufficient. You do not have to give a reason.

If you are not satisfied with the handling, you can file a complaint with the Data Protection Authority, Drukpersstraat 35, 1000 Brussels, via dataprotectionauthority.be.

10. Changes

In the event of a substantive change to this policy, the date at the top will be adjusted and the version number increased. The current version is always on this page.