We build websites that sell and work for your business.
Websites, online stores, CRMs, chatbots and branding — one team instead of three contractors. We launch a landing page in 14 days.
Full-cycle web studio · Kyiv · since 2020
Full-cycle development
of web products.
From idea to finished solution: one contract, one team and one point of accountability for the result across all six services.
All services →E-commerce that counts sales, not visits.
Online stores with payment, delivery and CRM integrations.
- Responsive design
- Payment systems
- Delivery and CRM
- SEO optimization
Landing pages and corporate websites that sell from the first screen.
From sales landing pages to corporate websites with integrations.
- Conversion-focused design
- CMS
- Request forms
- Multilingual support
CRM and business automation
Custom CRM/ERP solutions for managing business processes.
Chatbots and integrations
Telegram bots for sales, customer support and booking.
Web design and branding
UX/UI design for websites and apps, and brand identity.
SEO and support
SEO, technical support and development of websites, bots and web services.
What will your project cost?
Pick the type, the features you need and the timeline to see a ballpark price. We confirm the exact figure after the brief.
We don't just build websites.
We build an ecosystem for your business
that removes routine.
Websites, chatbots and automations in one system, so your team can focus on what matters — sales and growth. We start every project with a business goal, not a moodboard.
Avenoir — a premium jewelry online store in 2 months.
A multi-brand store with a clean aesthetic that stays out of the product's way: a catalog, Monobank payments, Telegram notifications and a convenient admin panel.
Read case study →
A full-featured online store for a multi-brand jewelry retailer, built around a clean aesthetic that never competes with the product.
- Client
- AVENOIR
- Area
- E-commerce
- Timeline
- 2 months · 2026
Projects that
work for our clients.
Every case study is a story of its own: the business challenge, the solution and the result. Here's what we've launched recently.
All case studies →
From idea to launch.
No surprises.
You always know what stage the project is at and what comes next. Every stage is reviewed before moving on to the next.
Discuss your project →Research and analysis
We study the business, audience and competitors, and document technical requirements and the project plan.
3–5 daysDesign and prototype
Wireframes, UI/UX design and an interactive prototype. We test user flows before development.
1–2 weeksDevelopment and integrations
Frontend, backend, and integrations with services and APIs. The code is reviewed at every stage.
2–6 weeksTesting and optimization
Functional tests, usability, security and speed. We fix everything before launch.
1–2 weeksLaunch and support
Deployment, monitoring and team training. Three months of warranty support free of charge.
1 week + support«We've been working with Complex Agency for over a year now. In that time the team has built several websites on site builders, various bots and business integrations.»
Numbers instead of promises.
Behind the studio's work are hundreds of launches and clients who come back with new tasks.
A stack that holds up under load.
We work with a modern stack and choose it to fit the product. We discuss compatibility with your systems at the start.
All technologies →Answers to popular questions.
Didn't find an answer? Write to us — we reply within 30 minutes during business hours.
Ask your own question →How much does website development cost?
The cost depends on the complexity of the project. A landing page starts at $500, a website or online store at $1,500, and complex web applications are estimated individually. We'll give you the exact price after a free consultation.
How long does development take?
A landing page takes 1–2 weeks, a corporate website 3–4 weeks, an online store 4–6 weeks, and a complex web application from 8 weeks.
Do you provide support after launch?
Yes. Three months of warranty support are free, then technical support packages start at $100 per month.
Can changes be made during development?
Yes, we work iteratively. Minor edits are included in the price; significant changes are discussed separately before the work begins.
Have an idea
worth launching?
A free consultation: we'll explain how to do it, how much it will cost and how long it will take. No obligations.
accepting projects for Q4 2026