You talk to the person who builds it.
CENTAURI is a marketing and software agency in Pilar, Buenos Aires, founded in 2020 by Juan Fontana. We started with social media; today we also create brands and build websites, online stores, apps and automation.
The first call is with me.
I’m Juan Fontana, CENTAURI’s founder. I talk to every client before we start, and I direct every development project.
We use AI to build and to check our work. It never answers you, never decides and never makes up facts.
Juan Fontana, CENTAURI’s founder
From social media to software
2020. We started with social media.
Strategy, content, design and copy for the accounts of shops and brands. Some of the brands whose social media we run today:
- Donosti (opens in a new tab)
- Bajos del Bragado (opens in a new tab)
- Sandra Joyas
- Los Olivos (opens in a new tab)
- Lado Persa (opens in a new tab)
- Martina Luxury (opens in a new tab)
- SL Fútbol Total (opens in a new tab)
For Donosti and Bajos del Bragado, we also created the full brand.
2026. Software, too.
PESQA, an Argentine sport fishing platform, is a client project: we built its brand, its platform and its social media.
Our boutique studio for Tiendanube apps. Its first app, Pizarra, converts your dollar prices into pesos every day.
In development. Coming soon to the Tiendanube App Store.
Today. Everything, with one team.
Rules you can check.
Under each one, a link to its proof. Deadlines and ownership also go in your proposal.
Every figure, with its source.
And with its date. If a result figure doesn’t have both, it isn’t on this site.
Deadlines in writing.
On landing pages, websites and stores, if a delay is our fault, you get 10% off for each week late, up to 30%. The clock starts once we have the deposit, the kickoff interview and access to your accounts.
PESQA went from first prototype to launch in 10 weeks: June 12, 2026 to August 17, 2026.
Everything in your name.
Your domain, ad account and admin access are in your name from day one. The code and designs are yours once the project is finished and paid.
What we built, with dates
The latest things we’ve built, for clients and for ourselves. Every date comes from its project log.
- This website
We measure our previous website and start rebuilding it from scratch.
A design sweep goes live: 83 changes in 9 rounds, approved with screenshots before release.
- In development
The brand and the app family, designed from scratch, plus Pizarra’s first video, animated in code.
The magazine is rebuilt for search engines and AI: 17 articles.
River levels go from 9 to 66 towns, with every gauge checked one by one.
Business sign-up in 4 steps, with the account at the end.
at 11 a.m.
3D medals with augmented reality, no app to install.
See 5 earlier entries
Split payments with Mercado Pago, built and verified end to end in the test environment.
The pre-launch page goes live, with a waitlist.
The pesqa.ar domain is confirmed.
The foundations: a database that keeps each business’s data apart row by row, the site, the accounts and the dashboards.
Kickoff: about 45 prototyped screens and the first code, on the same day.
Where to find us
Pilar, Argentina.
We serve clients in Argentina and also work remotely.
Questions about CENTAURI
What is CENTAURI?
CENTAURI is a marketing and software agency based in Pilar, Buenos Aires, founded in 2020 by Juan Fontana: social media, branding, websites, online stores, apps and automation, with published prices.
Who will I talk to, and who does the work?
Someone on our team replies, on WhatsApp or on the call. The first call is with Juan Fontana, CENTAURI’s founder, who directs every development project. Each social media account is run by someone on our team.
Where is CENTAURI based, and who does it work with?
CENTAURI is based in Pilar, Buenos Aires. We serve clients in Argentina and also work remotely. Some of our clients are Donosti, Bajos del Bragado, Sandra Joyas, Los Olivos, Lado Persa, Martina Luxury and SL Fútbol Total.
Do you use AI?
Yes, to build and to check our work. But AI never answers you: a person does. It never decides: our team makes the brand, strategy and quality calls. And it never makes up facts: every result figure on this site has a date and a source.
Talk to the person who builds it.
The first call is with Juan. It takes 20 minutes and is free of charge.
On WhatsApp, we reply within 2 hours on Argentine business days, 9 a.m. to 6 p.m. Buenos Aires time (GMT-3).