Terms and Conditions
Last updated October 2026
These terms describe how the Quadrix service works. The specific terms of each project are those set out in the signed agreement between the parties, which prevails over this page.
Who Provides the Service
Quadrix services are provided by Bernardo Oliveira Santos Silva, who trades as Quadrix, tax number (NIF) 266243401, with address at Av. Carlos de Oliveira Campos, 662, 4475-690 Maia, Porto, Portugal. Contact: info@quadrix.pt.
What Quadrix Provides
Quadrix develops mobile apps, custom software and websites for companies, and provides hosting and maintenance for the projects it builds.
Quote
Every project is quoted case by case. The quote is given in writing before work starts and is fixed: the agreed price does not change midway, unless the client asks for changes to what was quoted, which are quoted separately.
Prices exclude VAT, which is added at the applicable rate.
Ownership
- The code, the domain and the app store accounts are placed in the client's name once the project has been paid in full
- Material supplied by the client (text, images, logo) remains the client's
- Third-party components, such as open-source libraries, keep their own licences
Maintenance and Hosting
After launch, Quadrix offers a monthly hosting and maintenance service: technical updates, security, backups, monitoring and support. It is not mandatory, but it is strongly recommended and is common practice: without maintenance, an app or a website stops working properly as operating systems, browsers and app stores change.
The scope, fee and notice period for cancelling maintenance are set out in the agreement. If maintenance ends, Quadrix hands over to the client the code and access needed to continue with another provider.
Payment and Disputes
Payment terms (deadlines, methods and schedule) and how any disputes are resolved are set out in the agreement for each project.
What the Client Provides
So the work can proceed, the client supplies the necessary material through the Quadrix briefing:
- Accurate information about the business
- Text
- Images and other material
- Logo, where applicable
- Contact details and social media links
Timelines
Delivery time depends on the size and complexity of the project and is set out in the agreement. Delays by the client in supplying material may affect that timeline.
Approval and Launch
Before the work is considered complete, the client reviews the result and may request the changes included in the approved quote. After final approval, the project goes live.
Changes to These Terms
Quadrix may update this page. Changes do not affect agreements already in force, which are governed by the terms signed.