Mobile App Development
Start with an idea and a set of requirements. Our team writes the code, tests it properly and ships it to the App Store and Google Play.
Cortey Agency Growth infrastructure, built around your business.
Web applications, websites and AI agents, built to fit how your company actually works. Our team handles the engineering, then grows your reach through search and social media.
Working with
What we do
Everything you need, under one roof.
Six services, one team. The people who build your software also run the search and social that fills it.
Websites That Convert
Fast loading, clean on every screen and matched to the brand. Every page moves visitors toward becoming customers.
Custom AI Agents
Agents that run routine work on their own. Manual bottlenecks disappear and output scales without adding headcount.
Search and LLM Optimization
A full audit, fixes for what search engines struggle with, and content rewritten so the right buyers arrive. AI assistants start citing the brand too.
Social Media Marketing
Consistent campaigns aimed at the people who actually buy. Attention turns into revenue instead of impressions.
Custom Software Systems
Every business runs its own way. When ready made tools do not fit, we design and build the exact system that does.
How we work
Always clear where your project stands.
Learning your business
A short call maps the goals, the users and what a good result looks like. All of it happens before anyone writes a line of code.
Design and development
The application, website or AI agent gets built in focused sprints. Regular calls keep everyone aligned, so nothing at the end comes as a surprise.
Launch
The product goes live and gets watched closely from day one. Anything that surfaces in real use gets fixed straight away rather than parked for a later phase.
Support
Nothing ends at handover. The team stays close to the product, the marketing behind it scales as the business scales, and reaching us takes one call, 24/7.
Let us talk
Book a call or send a message.
Pick a slot that suits you, or write a few lines about the project. Either route reaches the same team.
Book a free intro call
In 20 to 30 minutes you find out honestly whether Cortey can help.
Prefer email?
Or write directly to corteyict@gmail.com
Trusted by
Clients we work with.
Open any card for the full story.
Freshly Signed
Spectrum™ App
Architecting the platform.
Medek Finance
Website rebuild, LLM and search optimization.
Ostrava Hrabuvka Highschool
Extension of an internal system.
Common questions
What clients ask on the first call.
What does Cortey Agency do?
Cortey builds custom software and grows the businesses that run it. That covers web applications, corporate websites, mobile apps, custom CRM systems and AI agents. The same team then handles search optimization and social media, so one partner covers both the product and the demand for it.
Which technologies do you use?
Front end work runs on Next.js and modern JavaScript. Back end work uses microservices with clean data models and integration into the tools already in place. AI automation runs on the OpenAI API, Claude, or open source models such as Llama hosted privately when data cannot leave the company, with retrieval augmented generation over internal documents and integrations written directly against the systems you already have.
Who do you work with?
Founders launching a first product, established companies replacing internal systems that no longer fit, and professional practices that need a stronger presence in search. Current clients include a psychotherapy platform, an investment advisory practice and a secondary school in Ostrava.
How much does a project cost?
Every price follows the scope. A website costs less than a custom CRM platform, and an AI agent connected to two systems costs less than one connected to ten. A fixed quote arrives after the free intro call, before any work starts.
Where are you based and do you work remotely?
Cortey is based in Ostrava in the Czech Republic and works with clients worldwide. Projects run remotely with regular calls, and the team stays reachable 24 hours a day, 7 days a week for calls and new requests.
How long does a project take?
A corporate website usually takes three to six weeks. A mobile app or a custom internal system usually takes two to four months, depending on how many features and integrations it needs. A schedule arrives with the quote, and the work runs in focused sprints with visible progress every week.
