Mobile and web applications
Native mobile apps and progressive web applications built on a shared codebase, released to the App Store and Google Play.
TARGION is a Brazilian software studio. We design, build and operate mobile and web applications for households across Latin America, Europe and Australia — from the first line of code to the version running on someone's phone.
What we do
We are not an agency that hands over a repository and leaves. We build our own products and run them in production — architecture, interface, infrastructure, security review, store submission, and the maintenance that comes after launch.
Our work sits in an unglamorous place: the routines, chores and small negotiations of running a household. It is a domain with real constraints. People use these apps tired, in bad light, with one hand — and they abandon anything that asks too much.
Native mobile apps and progressive web applications built on a shared codebase, released to the App Store and Google Play.
Vision and language models put to narrow, verifiable jobs — reading a photograph of a room, extracting structure from free text — constrained by a closed catalogue rather than left open-ended.
Digital books and structured learning material, published and licensed under our own imprint.
Products
We keep a short catalogue on purpose. Every product is operated by the same people who built it.
A household routine application. It reads a photograph of any room and returns a realistic weekly plan, then divides the work fairly between everyone who lives there — with a conversational assistant for the questions that come up mid-task.
How we build
Everything we ship runs on infrastructure we operate ourselves. We treat privacy and correctness as engineering constraints, not as paperwork written after the fact.
Row-level security decides what a request can read, so authorisation does not depend on application code remembering to check.
Automated authorisation, secret-scanning and prompt-injection batteries run before deployment, not after an incident.
Recovery is rehearsed on a schedule. A backup nobody has restored is a file, not a backup.
Third-party models are disclosed by name, consent is recorded with the version of the text the person actually read, and deletion is proven by a test that empties the database.
Company
TARGION NEGOCIOS DIGITAIS LTDA is a limited liability company registered in Santa Catarina, Brazil, incorporated in February 2026 under CNPJ 65.102.060/0001-60. The company develops and licenses computer programs, and publishes digital books and training material.
The studio is led by its founder, Gustavo Syllos, sole administrator of the company. We work as a small, deliberately senior team, and we operate the products we build rather than passing them to someone else.
Contact
For business, press or partnership enquiries, write to us directly. We answer in English, Spanish and Portuguese.