About Us

Last updated: July 2026

Guardião Kids is a digital e-book about children's online safety, developed and sold by Fonseca Marketing Digital LTDA, a company registered in Brazil.

Company details

Legal (corporate) nameFonseca Marketing Digital LTDA

Trade nameMarcos Melo

Company registration (CNPJ)37.068.617/0001-59

Legal typeSociedade Empresária Limitada (Brazilian LTDA — equivalent to a private limited liability company)

Date of incorporationMay 5, 2020

Registration statusActive

Registered business activityProfessional and managerial development training (CNAE 85.99-6-04), with secondary activities including book/content publishing, web design and marketing services

Registered addressR. Artemio Castro Valente, 295, Edifício Esp. Coml. Paralela, Box 1B, Sala 7B, Canabrava, Salvador – BA, 41.260-300, Brazil

Contact emailfonsecanegociosonline@gmail.com

Contact phone+55 71 3055-0540

What we do

Fonseca Marketing Digital LTDA creates and distributes digital educational content for parents. Our flagship product, Guardião Kids, is a downloadable PDF e-book that teaches parents practical, non-technical steps to keep children safer on smartphones — covering parental control setup, screen-time management, warning signs of online risk, and guidance for having open conversations with children about digital safety.

Guardião Kids is an independently produced educational resource. It is not affiliated with, endorsed by, or produced in partnership with Apple, Google, or any social media platform mentioned in its content.

How to reach us

For questions about the product, your purchase, refunds, or this website, contact us at fonsecanegociosonline@gmail.com or by phone at +55 71 3055-0540. We aim to respond to all inquiries within 2 business days.