DUOLABS
Custom Software Studio

From small businesses to startupsCustom 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

The companies that move first pull ahead of their competitors.

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. The duo in Duolabs is exactly that missing seat. Instead of hiring a developer, grow your business alongside a team with 20 years of experience.

A system can take over the work people patch by hand

Every month you put it off costs the same hours and money again.

Orders arrive over chat appsOrders by chatEvery order lands in one placeAll in one place
Retyped into Excel by handRetyped into ExcelEnter once, never retypeEnter once only
Printed on paper for the floorPrinted for the floorChecked on a phone, on siteChecked by phone
Share changes by phoneChanges by phoneUpdates reach everyone instantlyInstantly synced
Calculate quotes by handQuotes by handAuto-priced from your rate tableAuto-priced
Keep job status in the owner's headStatus in your headSeen at a glance on a dashboardOn a dashboard

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

A working prototype in 2 weeks

Login, payments, and admin are already built, so the first 2 weeks go to your idea.

Websites & Web Apps

Landing pages, inquiry forms, and SEO are 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

Generic tools often include more than you need. We build only the features required by your workflow.

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.

A custom business system that cuts repetitive work

Instead of bending your work to a rigid SaaS, we build only what your workflow needs.

AI automation that speeds the work up

Automate inquiry responses, summaries, and data organization to save your team's time. See the actual process in the demo.

Handle the work that happens on a map, on the map

Put anything with a location, stores, sites, vehicles, on a map and handle search, routing, and radius analysis in one screen. The demo shows what changes when list data becomes place data.

A 3D product experience that runs in the browser

Provide 3D product views that users can rotate and zoom in the browser, with no app to install. The demo shows the controls and layout.

Track your project from your phone

Not something to preview in a browser, but something you install and carry. See what you can download today and what we are building next.

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
LIVE DEMOS YOU CAN OPEN NOW

A development system that grows around DEUX

Reusing proven components cuts development time and keeps interfaces consistent.

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

Solutions for companies getting their systems ready

Let the system handle the repetition; the judgment stays with people.

From idea to product: no dev team needed

A tech partner that takes you from concept to launch

Best forStartups and SMBs without in-house developers
  • From shaping the idea to planning and design
  • Fast web/app MVPs to validate the market
  • App Store / Play Store launch and operations
  • Fractional CTO and tech advisory for decisions
Engineering that grows marketing & sales

Growth engineering driven by data, not guesswork

Best forTeams running ads but missing conversion data
  • High-converting landing pages and sales funnels
  • Lead capture wired into your CRM and messengers
  • Ad/event tracking with real-time dashboards
  • Continuous A/B testing of copy and design
Make a legacy system feel new

Rebuild slow, unstable services into reliable ones

Best forBusinesses with shaky systems and no one to fix them
  • Performance, stability, and code refactoring
  • Security hardening and data cleanup
  • UI/UX renewal for better usability
  • Cloud migration and operations handover
AI that fits your work

Test on a small scale, then apply it to real work

Best forCompanies assessing where AI can be useful
  • AI chatbots that handle customer support
  • AI search over your internal docs (RAG)
  • Automation of repetitive work and reports
  • AI features embedded into your product

Review project status directly

Check progress and schedules anytime in your own client portal app. We share the build process and operations transparently.

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.

Requests are shared in the working service

We do not rely on reports alone. Review the updated screens and behavior at the actual service URL.

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 idea to product

Review a clear deliverable at each stage of planning, design, development, launch, and operations.

01DISCOVER
Discovery

We define the core user problem and align on scope and priorities.

02DESIGN
Design

We design the structure and flows, validating fast with prototypes.

03BUILD
Build

We build maintainable systems with tests and code review.

04LAUNCH
Launch

We ship reliably with release automation and store submission.

05MANAGE
Operate

We operate long-term with observability, logs, and metrics.

Source code alone will not keep it running

Code, accounts, and data all hand over as a package you can download at any moment.

  • 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.

A digital partner across every industry

Across sectors, we build software around the way each business actually works.

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

A quote for only the scope you need

Build scope and post-launch maintenance are priced separately. Once requirements are confirmed, we provide a fixed quote.

A one-page landing starts at ₩1M. Start small and grow as needed.

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)

Review the payment and handover terms first

The four things to know before signing, written here rather than buried in a contract.

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

The things people tend to ask before reaching out.

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.

Ready to start your product?

Drop us a quick message and we'll get back to you within one business day.

Duolabs, Your Business Success Partner

20 years, always the one building

Most of that time was spent inside demanding projects for major enterprises and banks. Building hands-on, I learned exactly where good plans break down and how heavy operations get after launch. Duolabs gathers that experience into one person's accountability.

What matters in outsourced work is knowing who is responsible from start to finish. At Duolabs, the person you consult with also handles planning, development, launch, and operations. There is no undisclosed subcontracting. AI tools may assist the work, but I remain responsible for every decision and the final quality.

Seojin Hong
Seojin HongFounder, Duolabs
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