DUOLABS
AI & Custom Software Developer

From small businesses to startups Custom software, apps, and automation, built fast without a team

Understanding your business, growing it with technology.
An IT consulting and development partner.

In the AI era, small companies make the biggest leaps

A development team that knows how to use AI turns ideas into products dozens of times faster than before. Work postponed for lack of a development team is finally within a small company's reach.

More and more companies now do the same work at a fraction of the cost. If you keep last year's way of working, you are not holding your position. You are slipping back a little every year, and the gap widens instead of closing.

That said, AI does not take responsibility for security or quality. An experienced developer still has to review the result and set standards that last. Duolabs builds fast and solid, drawing on references and know-how earned across many industries. Grow your business alongside a team with 20 years of experience.

The work people patch by hand, a system can take over

These are habits kept out of familiarity. A system can take them over.

In 2 weeks, a working prototype

Websites & Web Apps

Landing pages, inquiry forms, plus SEO and speed optimization, built together.

We design landing pages and sales funnels that turn visitors into actual customers. Lead capture forms connect automatically to your CRM and messaging tools, shortening the time from inquiry to consultation. SEO and page-speed optimization improve both search traffic and conversion potential.

Websites & Web Apps: See details
Apps & Responsive Web

One codebase covers iOS, Android, and responsive web together.

One codebase gives you iOS and Android apps plus a responsive web experience. Push notifications and payments are already built, and we carry it through store submission and review.

Apps & Responsive Web: See details
Desktop Apps

Business apps that run natively on Windows and macOS.

Business software for Windows and macOS that runs without a browser. It talks directly to receipt printers and barcode scanners, and keeps working offline.

Desktop Apps: See details
Cloud Deploy & Ops

Shipped to AWS/Vercel with domains and certs, run reliably.

From deploying to AWS or Vercel to domains, SSL, backups, and monitoring, set up in one go.

Cloud Deploy & Ops: See details
Custom Business System

We bring scattered spreadsheets and manual work into one system.

Rather than fitting your work around generic SaaS, we design only the features you actually need. Scattered spreadsheets and manual steps come into one system, with repetitive entry, checks, and alerts automated.

Custom Business System: See details
In-house Infrastructure

Servers, NAS, backup, VPN, and company email: we build your IT foundation.

From choosing equipment to installation, security setup, and documentation. Accounts, access, and backups stay organized, so operations survive staff changes.

In-house Infrastructure: See details
In-house AI

An AI that answers from your documents, running on your own server.

An in-house LLM with document search and Q&A, running on your own server. Data never leaves the company, and usage adds no per-call cost.

In-house AI: See details
AI & Tech Advisory

Work through AI training, technology decisions, hiring, and roadmaps together.

We clarify the technologies and priorities that fit your business stage, so you spend less on trial and error.

AI & Tech Advisory: See details

2-week refund You may request a full deposit refund within two weeks of kickoff, subject to the contract terms.

Less repetitive work, a custom business system

Deep across multiple corporations, a business system

Speed the work up with AI automation

Work on the map, a geospatial system

Right in the browser, a 3D product experience

In your hand, a mobile service

Shaped around your work

Screens are built around your actual sales, approval, and dashboard workflows instead of a fixed template.

Start small, grow in modules

Start with what you need, then add modules like inventory, booking, or billing over time.

Review the demo

Review the main screens and features with demo data, with no login required.

Explore the CP demo

For consistent interfaces, a design system

Quality that holds

From a single button to a full screen, everything uses the same tokens and components, keeping quality consistent across products.

Faster delivery

We reuse proven components instead of starting from scratch every time, reducing development time and cost.

Easy to maintain

A shared component can be updated once and applied across products, making maintenance easier.

Explore DEUX

Data asleep in spreadsheets and ERP, now just ask

Project status, reviewed directly

Track it in your client app

Check your project's progress and schedule anytime in your own client portal app. Keep key materials and communication history in one place.

Run it transparently in our console

We manage progress, consultation records, and schedules in the Duolabs console, sharing status and changes as they happen.

Secure handling & clean handover

We keep secret keys, accounts, and access safe, and when you want, hand over the code, docs, and accounts in one tidy package.

Your requests, live in the service

This site and the cp.duolabs.co.kr demo are deployed and operated in the same way.

Live from day one

Review each updated screen and feature directly at the live service URL.

Project board

Track requests, work in progress, and completed tasks on the project board.

Duolabs app

Review and manage progress, schedules, files, and messages in the Duolabs app.

From the LLM gateway to every API, designed and run in-house

Source code alone will not keep it running

  • Source codeThe full repository
  • Domain & hosting accountsTransferred into your name
  • Env vars & secretsEverything needed to run it
  • Deploy runbookSo the next person can follow it as-is
  • Database & dataEverything accumulated so far, in full
  • Handover docsArchitecture and operating notes

Honest advice If you don't need a system, we'll say so. We never push development you don't need.

Step into a company like yours

Across every industry, a digital partner

Commerce & RetailConnect product, inventory, and order data across online and mobile purchase flows.
Finance & FintechDesign authentication, permissions, and audit records, and apply financial data handling rules to the system.
Logistics & MobilityConnect dispatch, location, and delivery status to reduce delays and duplicate work.
Healthcare & BioManage access and records for sensitive data, then build the analysis features the service requires.
Education & EdTechConnect enrollment, attendance, and performance data to provide content and feedback for each learner.
ManufacturingDigitize work orders, inventory, and quality records so process status is visible in one place.
Public SectorMove application, approval, and notification procedures online and make their status visible.
AI & DataOrganize scattered data into a structure that supports search, summarization, and analysis.

Project sectors I have worked in

Major Korean banksCard & paymentsTelecom carriersEnterprise electronicsConglomerate groupsBeauty & cosmeticsFintechHealthcare & medtechMobility platformTravel techEdu-techIT & security

Only the scope you need, quoted

Development

Website (landing / homepage)

From a one-page landing to a multi-page site or web app

₩1M ~ ₩7.2M1~4 weeks
Mobile app

iOS/Android app or responsive web app, through store launch

₩8M ~ ₩25M2~4 months
Desktop app

Business software for Windows/macOS, including device integration and auto-update

₩6M ~ ₩20M2~3 months
AI chatbot & automation

Support chatbots, document/data automation, workflow bots

₩2M ~ ₩10M2~6 weeks

Implementation

Back-office system

A custom system for sales, approvals, inventory, and more

₩3M ~ ₩20M2 weeks ~ 4 months
Office IT infrastructure

Servers, NAS, backups, and office networks tailored to your workplace

₩2.5M ~ ₩8M1~3 weeksHardware and licenses billed separately
On-premise LLM

A dedicated internal LLM that processes models and data within infrastructure your organization controls

₩10M ~ ₩30M1~3 monthsGPU hardware, data center, and model license costs billed separately
Custom engagement

Two or more bundled, or anything that resists a standard package

CustomScoped per case
50% upfront·after you approve 50% balance
See the back-office running now in the CP demo
MaintenanceA monthly plan that keeps operations and improvements going after launch
Basic
/mo₩200K~300K
  • Monthly check-up
  • Bug fixes
StandardRecommended
/mo₩300K~600K
  • Twice-monthly check-up
  • Feature improvements
Premium
/mo₩600K~1M
  • Weekly check-up
  • Priority response
  • New features
Pay yearly and get 2 months free (10-month price)

Payment and handover terms, reviewed first

50/50 payment

Pay 50% when signing and the remaining 50% after reviewing the completed work.

2-week refund

You may request a full deposit refund within two weeks of kickoff, subject to the contract terms.

Honest advice

If you don't need a system, we'll say so. We never push development you don't need.

100% ownership

On completion, we provide the code, servers, accounts, secrets, and handover documents so the project can move to another environment or owner.

Seojin Hong
I handle the work from consultation through operations and will honor these terms.Seojin Hong · Founder, Duolabs

Frequently asked questions

It depends on the project scope. The first consult is free; after we shape the requirements together, you get a fixed or stage-based quote. We recommend starting small (an MVP), validating, then scaling.

It varies with scope. An MVP with just the core features can ship in as little as a few weeks. In the consult we set priorities together to find the fastest path to validation.

One person with 20 years of experience handles planning, design, development, and operations. Code, documents, and infrastructure follow a consistent structure and are kept in a downloadable handover package. Vetted specialists join when the scope requires them.

Yes. Monitoring, bug fixes, and feature improvements are available through a monthly maintenance plan.

Yes. I review the existing code and refactor/stabilize it, or take over operations as-is.

Yes. We cover chatbots, document search (RAG), workflow automation, and AI features built into products, starting with a small PoC before expanding.

Your business success partner, Duolabs

Duolabs is a software company led by a developer with more than 20 years in the field, turning the way businesses work into systems. We partner with you on digital transformation (DX) and AI adoption (AX).

Outsourced projects usually pass through many hands. The person who consults, the one who designs, and the one who builds are often different, and with every handoff the original story fades a little. Duolabs leaves no such gaps. A developer who has worked through enterprise, financial, and manufacturing sites holds on to what you first said, all the way to the end.

Seojin Hong
Seojin HongFounder, Duolabs
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