// about jj software
A lean software house, focused on shipping
JJ Software was built to serve companies that need technology done right, without the overhead and cost of a large consultancy. We work with mobile apps, websites, and web systems, from the first sketch to running in production.
JJ Software at a glance
- What we do
- iOS and Android apps, WordPress and custom websites, and SaaS and Micro-SaaS systems for small and medium businesses.
- Where we are
- São Paulo, Brazil, working remotely with clients across Brazil and abroad, in English and Portuguese.
- Our own apps
- Hotaru (AI flashcards), Everyish (a habit tracker designed for ADHD brains) and Cobrei (hours, Pix invoices and MEI taxes), published on the App Store.
- Client work
- Equivolt, a SaaS platform for lightning protection (SPDA) risk analysis under NBR 5419-2, and the corporate website of RSJV Engenharia.
- Technology
- Swift, SwiftUI and SwiftData on iPhone, iPad and Apple Watch; Kotlin on Android; Next.js and WordPress on the web; Cloudflare Workers and Postgres on the back end.
- How we engage
- Scope, timeline and price in writing before we start, delivery in short cycles, and payments tied to deliverables.
- Quotes
- The initial assessment is free, and we reply within 1 business day.
How we work
Every project starts with a clear understanding of the problem to solve, before any technology decision. From there, we build in short cycles, with visible deliverables and constant feedback, so what ships at the end is exactly what the business needs — no more, no less.
What guides our work
Simplicity first
We prefer simple solutions that solve the real problem over complex architectures that only look good on paper.
Transparent process
Timeline, scope, and cost are defined clearly from the first conversation, no fine print.
Quality that outlasts delivery
Code that's tested, documented, and organized so the product keeps evolving after launch.
Got a project in mind?
Tell us what you need to build and we'll get back to you with a straightforward proposal.