Terms of
Service.

These Terms of Service set out the rules for the sale of products in the online shop available at kalkmate.pl, operated by Kacper Popko conducting business under the name KAJPA Kacper Popko, hereinafter referred to as the “Seller”.

1. Orders are accepted through the kalkmate.pl website 24 hours a day, 7 days a week.
2. Placing an order constitutes acceptance of these Terms of Service.
3. After placing an order, the Buyer receives a confirmation at the e-mail address provided.
4. The Seller reserves the right to refuse to fulfill an order in justified cases.

1. All prices shown on the website are gross prices (including VAT).
2. Payments are handled by the Przelewy24 service (PayPro SA, ul. Kanclerska 15, 60-327 Poznań).
3. Available payment methods: payment card, BLIK, bank transfer and other methods available in the Przelewy24 service.

1. The KalkMate product is manufactured to order as the Seller’s own production.
2. The fulfillment time is up to 4 weeks from the moment the payment is booked. The standard fulfillment time is 1–2 weeks.
3. Delivery within Poland is made via InPost (parcel locker — Paczkomat). Delivery cost within Poland: PLN 0.
4. International delivery (EU countries): EUR 20. Delivery outside the EU: EUR 35.
5. The Buyer receives the shipment tracking number once the parcel has been dispatched.

The Consumer has the right to withdraw from a distance contract within 14 calendar days without giving any reason, subject to the exception described below.

1. The withdrawal period expires 14 days after the day on which the Consumer took possession of the goods.
2. To exercise the right of withdrawal, the Consumer must inform the Seller of their decision by e-mail at: kontakt@kalkmate.pl.
3. Goods should be returned to: KalkMate, ul. Zastawie I 37, 16-070 Choroszcz. The payment is refunded within 14 days of the day on which the returned goods are received. If the Consumer expressly requested that performance of a service (e.g. AI solutions) begin before the end of the withdrawal period, the Seller may deduct from the refund the remuneration for services actually performed up to the moment of withdrawal (Art. 35 of the Consumer Rights Act), and, in the case of returned goods showing signs of use beyond what is necessary to establish the nature and functioning of the goods — also an amount corresponding to the reduction in their value (Art. 34(4) of the Consumer Rights Act).
4. The right to file complaints under the statutory warranty (rękojmia) and the warranty (§6) applies independently of the above provisions and is not limited by them.

1. Products are covered by the Seller’s warranty for a period of 24 months from the date of purchase.
2. Complaints should be submitted by e-mail to: kontakt@kalkmate.pl, stating the order number and a description of the defect.
3. The Seller processes complaints within 14 calendar days.

1. The controller of personal data is the Seller.
2. Personal data are processed solely for the purpose of fulfilling the order and are not disclosed to third parties, except for courier companies and payment operators.
3. The Buyer has the right to access their data, have it rectified and request its deletion.
4. The website uses cookies, including the Microsoft Clarity analytics tool (heatmaps, session recordings), which is loaded only after consent is given in the cookie banner. Details can be found in the Privacy Policy.

1. On the kalkmate.pl website, the Seller provides a free service by electronic means: a chat with an assistant whose answers are generated by artificial intelligence (AI). The assistant is not a human. It answers questions about products, orders and how the calculator works.
2. To start a conversation, the following are required: a web browser with JavaScript enabled, providing an e-mail address, confirming that the user is not a bot (verification performed in the browser), and accepting this section. The service agreement is concluded when the conversation starts and terminates when it ends (the “End” button or closing the page). The user may stop using the chat at any time.
3. The assistant’s answers are for information purposes only, may contain errors and do not constitute an offer within the meaning of the Polish Civil Code or a declaration of intent by the Seller. In the event of any discrepancy, these Terms of Service, the product description on the website and the information provided in the order confirmation are binding. The assistant has no access to orders or accounts — matters concerning specific orders, returns and complaints should be directed to kontakt@kalkmate.pl.
4. The Seller may reply to a question from the chat by e-mail to the address provided, in particular when the assistant does not know the answer.
5. It is prohibited to send in the chat any content that is unlawful, offensive or infringes the rights of third parties, as well as specially protected data, passwords, payment card details and the calculator’s AI code. The Seller may block a conversation that violates these rules and apply limits on the number of messages.
6. The assistant may offer help on its own initiative by displaying a short message next to the chat button (e.g. after some time on the page or at the price list). Such a message appears no more than twice during a visit and does not appear again once it has been closed.
7. The content of conversations, the e-mail address and technical information (the page from which the message was sent, the browser) are stored and accessible to the Seller and persons authorized by the Seller for the purpose of handling questions and improving customer service. If the user has consented to analytics cookies, the course of the visit to the website (pages visited and sections viewed) and the Microsoft Clarity session recording identifier are also linked to the conversation. Details, legal bases and the retention period (12 months from the last message) are described in the Privacy Policy.
8. Persons under the age of 16 may use the chat with the consent of a parent or legal guardian.
9. Complaints concerning the operation of the chat may be submitted to kontakt@kalkmate.pl. The Seller processes them within 14 days.

1. In matters not regulated by these Terms of Service, the provisions of the Polish Civil Code, the Consumer Rights Act and the Act on Providing Services by Electronic Means apply.
2. The Seller reserves the right to amend these Terms of Service. Amendments take effect on the date of their publication on the website.
3. Any disputes will be settled by the court having jurisdiction over the Seller’s registered office.