Pricing
Build costs start at ₩1M and maintenance at ₩200K/month. Once requirements are confirmed you get a fixed quote, not a range.
A third option beyond an agency or in-house hire
Compare a typical agency, an in-house hire, and a solo studio point by point.
| Item | DuolabsBest | Typical agency | In-house hire |
|---|---|---|---|
| Getting started | 50% upfront · 2-wk refund | Often paid in full upfront | Hiring · fixed salary |
| Transparency | Live service, real time | Screenshot reports | Real time |
| Owner continuity | One person, plan to ops | PM / dev handoffs | Team building needed |
| AI built in | Yes | Optional | Depends on the hire |
| Code & ownership | 100% handed over | By contract | Stays in-house |
| Maintenance | From ₩200K/mo · flexible | Separate contract | Fixed headcount cost |
| Time to start | Same day ~ days | Weeks of proposals | Months to hire |
| Fixed cost burden | None · per project | None | Ongoing salary |
Guaranteed with every plan
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.
Frequently asked questions about pricing
Build cost by service: Website (landing / homepage) ₩1M~7.2M, Mobile app ₩8M~25M, Desktop app ₩6M~20M, Back-office system ₩3M~20M, AI chatbot & automation ₩2M~10M, Office IT infrastructure ₩2.5M~8M, On-premise LLM ₩10M~30M. Ranges narrow once you pick a scope, and after requirements are confirmed you get a fixed quote rather than a range.
Yes. Build cost is one-time and maintenance is a monthly subscription billed separately: Basic(Monthly check-up) ₩200K~300K/month, Standard(Twice-monthly check-up) ₩300K~600K/month, Premium(Weekly check-up) ₩600K~1M/month. Maintenance is optional, and paying yearly waives two months.
Typical timelines: Website (landing / homepage) 1~4 weeks, Mobile app 2~4 months, Desktop app 2~3 months, Back-office system 2 weeks ~ 4 months, AI chatbot & automation 2~6 weeks, Office IT infrastructure 1~3 weeks, On-premise LLM 1~3 months, Custom engagement Scoped per case. Getting started takes a day to a few days, not weeks of proposals.
You pay 50% at contract signing and the remaining 50% after you have reviewed the finished work. Within two weeks of kickoff you can request a full refund of the deposit under the contract terms.
Yes. Even with a vague scope we work through the requirements with you and then give you a fixed quote. The first consultation is free, and the estimator on this page shows a range without any login or contact details.
We can start the same day or within a few days, where an agency needs weeks of proposals and contracts and hiring takes months. One person handles everything from planning to operations, so the owner never changes, and at completion the code, servers, accounts, and secrets are handed over 100%. Costs are per project, with no fixed headcount.
Got your scope? Let's talk
Not sure of the exact scope? We'll sort out requirements together and give you a fixed quote.