DUOLABS
Our Services

Custom Business 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.

Timeline
2 weeks ~ 4 months
Build cost
₩3M~20M
Time to start
Same day to a few days

Who this fits

  • Companies where each team keeps its own spreadsheet and someone merges them by hand
  • Organizations where approvals or stock levels require asking a person, so work stops when they are away
  • Companies that tried off-the-shelf SaaS, found it did not match how they work, and went back to Excel

How far we take it

Included

  • Mapping the current workflow and choosing what moves into the system
  • Screen design and a permission model
  • Core screens: list, create, edit, search
  • Automation for repetitive entry, checking, and notifications
  • Migration of existing spreadsheet data
  • Admin accounts, permissions, and handover documentation

Not included

  • Bookkeeping, tax filing, or issuing electronic tax invoices on your behalf
  • Consulting that defines your internal rules and approval chains
  • Staff training or an on-site presence after rollout
  • Server running costs and third-party service fees

Build cost by scope

ScopeBuild cost
Start smallCore features only₩3M~9.8M
StandardTypical scope₩7.3M~15.8M
LargeMany screens, complex₩12.4M~20M

These are example ranges. Once requirements are confirmed you get a fixed quote. Maintenance is billed separately as a monthly plan.

These figures are current as of August 2026. The latest ranges are on the pricing page.

How it runs

  1. 01

    Discovery

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

  2. 02

    Design

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

  3. 03

    Build

    We build maintainable systems with tests and code review.

  4. 04

    Launch

    We ship reliably with release automation and store submission.

  5. 05

    Operate

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

Frequently asked questions

It is usually better not to move everything. We look at repetition, not headcount. The places worth moving are where someone retypes the same value daily, checks the same thing twice, or has to ask how far a task got. Something done once a month is usually cheaper left alone. We build that list together in the first conversation.

We migrate them. Spreadsheets are built to be read by people, though, so importing them as-is often does not work: merged cells, status shown only by colour, the same thing spelled several ways. We agree on cleanup rules first, show you what changes into what, and then migrate.

Usually it is not missing features but that the system takes more steps than the old way. So we do not build everything at once: we ship the one or two most frequent tasks first and let people use them. If those get faster than the spreadsheet, the rest follows. If they do not, that part was not worth moving, and it is better to learn that early.

We build on that assumption. Starting narrow is precisely what makes widening possible later. Permissions and the data model are the expensive things to change afterwards, so we give those room from the start. Tell us roughly which direction you expect to grow and we design with that opening left in.

Related public docs

Proposals, scope guides, and build examples we publish openly.

See all public docs

A vague scope is fine

Tell us where things stand and we will point to the scope you need and a rough size.