Conversion-focused websites
Fast, responsive experiences designed to turn attention into qualified opportunities.
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Testimonials
What clients say.
“Isaac, estamos amando o seu trabalho! A repaginação do nosso site ficou incrível, e estamos muito satisfeitos também com o atendimento e com todo o trabalho realizado no Google Ads.
Tem sido uma experiência excelente. Você é muito atencioso, profissional e sempre disponível para nos orientar. Estamos muito felizes com o resultado e com essa parceria!”
Digital productsMore coming soon
Selected work
Work designed around real business problems.
Every project brings strategy, experience and engineering together to deliver something useful—not just a polished interface.
How we help
Two fronts: build the foundation, then grow the business.
First, a solid website or system. Then SEO and Google Ads so the right customers find you, month after month.
Build
Projects with a defined scope, timeline and delivery.
Custom web systems
Secure, scalable platforms built around the way your business operates.
Mobile applications
Clear, dependable mobile products that are easy to use and evolve.
Internal tools
Automations and dashboards that reduce manual work and support better decisions.
UX and product design
Research, architecture and interfaces that make complex products feel simple.
Grow
Monthly services that create demand and keep improving results.
SEO
Technical work, content and authority so your site shows up when customers search on Google.
Local SEO
Google Business Profile, maps and reviews so nearby customers can find you.
Google Ads
Well-structured search campaigns with budget control and conversion tracking.
Continuous improvement
Maintenance, performance and testing so the site converts more from the same traffic.
Diagnóstico gratuitoDisponível em português
Sua empresa está perdendo clientes no Google e no WhatsApp?
Responda 15 perguntas rápidas e descubra onde estão os vazamentos. Leva 3 minutos e é gratuito.
Our method
Clarity before code.
You can see the decisions, priorities and progress from the first conversation through delivery.
- 01
Understand
Goals, users, operations and measures of success.
- 02
Define
Scope, experience, architecture and delivery plan.
- 03
Build
Short cycles, frequent validation and engineering quality.
- 04
Evolve
Launch, observe and continuously improve.
FOUNDER / CASTROLOGIC
Engineering with a business perspective.
Isaac Castro founded Castrologic to bring strategy, design and development closer together. Every engagement receives direct involvement, clear communication and technical decisions designed to last.
TAILORED PROPOSAL
Every successful project starts with a conversation.
Tell us about your business and goals. We’ll analyze the project and prepare a proposal designed specifically for your company.
- Free consultation
- Personalized proposal
- Reply within 24 business hours
- No commitment
A 2–3 minute brief. Free and without commitment.
Built for your business
Every solution begins with your goals, audience and operation — never a generic package.
A transparent process
Clear scope, milestones, timing and next steps before you make any commitment.
Designed to perform
Performance, SEO, accessibility and conversion are considered from day one.
Simple to start. Rigorous in execution.
- 01
Share the context
A focused brief you can complete in your own time.
- 02
We analyze it
We assess goals, scope, risks and opportunities.
- 03
Receive your proposal
We reply within 24 business hours with clear next steps.
Before you begin
Is the initial consultation free? +
Yes. The brief and initial analysis are free and do not create any commitment.
What happens after I submit? +
We review your answers and contact you to align the context before preparing the proposal.
When will I hear back? +
Our first reply arrives within 24 business hours.
Do you use ready-made packages? +
For projects (websites, systems and apps), no: every scope is defined around the goals, priorities and reality of the business. SEO and Google Ads work as monthly services.
Direct contact
Prefer to start with a conversation?
Share the context by email or WhatsApp. We reply within 24 business hours.