Privacy notice
Last updated: September 16, 2026
captainjack.build is the website of Captain Jack's App Factory, in the Netherlands, which is responsible for the personal data described here. The site itself owns no database.
Contact form (Web3Forms)
If you use the contact form, the name, email address, and message you enter are sent to Web3Forms, which forwards them by email to Captain Jack so he can reply. We use Web3Forms only to deliver these enquiries; the form sets no cookies in your browser.
Booking a call
If you book a call, the booking page (Google Calendar) collects your name, email and anything you add, so Captain Jack can prepare for and hold the call.
Clients and business contacts
We keep a simple contact record (name, company, role, public profile links and our notes) for clients, prospects and partners. It comes from you, or from what you or your company published, such as company websites and professional profiles. We use it to get in touch and keep track of our work together, based on our legitimate interest in running the business, or to perform a contract with you. You can object at any time and we will stop and delete the record. If you become a client, we keep invoices and related records as Dutch tax law requires.
Who helps us
Besides the providers named on this page, we use trusted providers for hosting, email, calendar and scheduling, a contact database, bookkeeping, social media management, and AI tools that help draft and organise our work. They process data only on our instructions. Some are based outside the EU; those transfers rely on an EU adequacy decision (such as the EU-US Data Privacy Framework) or the EU's standard contractual clauses. We never sell your data, and no decision about you is made automatically.
How long we keep it
Only as long as needed: messages and bookings while the conversation is relevant, contact records until they are no longer useful or you object, and invoices for the seven years Dutch tax law requires.
Anonymous page view counts
Every page view sends one anonymous count to our own server, whatever you choose in the cookie banner. It records which choice was in effect (accepted, necessary only, or not decided yet) and whether the banner was showing. Clicking a banner button sends one more count, recording which button. Nothing else is sent. It tells us how much of our traffic the analytics below can't see, so a quiet week and a blocked week don't look the same. The count carries no identifier, no page address and no cookie, and it is stored only as running totals per hour, so it can't be traced back to you. We do this on the basis of our legitimate interest in knowing how complete our analytics is. Nothing is stored on your device for it. Your IP address reaches our hosting providers the way it does for any web request; it is used only to deliver the count and is not stored with it.
Analytics (PostHog)
With your consent, we use PostHog (hosted in the EU) to measure usage so the site can be improved: page views and interactions such as clicks and navigation, with anything you type masked. We do not record your screen or sessions. It runs as its own dedicated PostHog project for this site. Without your consent, nothing is captured and no analytics cookies or storage are set.
Cookies and consent
On your first visit a banner lets you accept analytics or keep only the necessary storage. Analytics cookies are set only after you consent; if you decline or later withdraw consent, they are removed where technically possible. You can change your choice at any time:
Your rights
You can ask for a copy of your data, or to correct, delete, restrict or transfer it, and you can object to how we use it. Reach us through the contact form. If you are not satisfied with our answer, you can complain to the Dutch Data Protection Authority (Autoriteit Persoonsgegevens).