Facegloria has attracted 100,000 members since its inception last month.
Appreciation for a post can be expressed using an “amen” button and 600 words are forbidden on the site.
Currently available in Portuguese only, there are plans to launch the site in other languages and create a mobile app.
Mr Barros and his three co-founders were working in the office of Acir dos Santos, the mayor of Ferraz de Vasconcelos, when they came up with the idea.
Mr dos Santos has since invested $16,000 (£10,000) in the start-up.
“Our network is global. We have bought the Faceglory domain in English and in all possible languages. We want to take on Facebook and Twitter here and everywhere,” he said.
“It was written by Larry Wall who is a Christian, and who has expressed that Christian faith, and within the language there are little clues about that. One of the key words is ‘bless’ – you can bless something, and it has a technical meaning.”