MAEUM BLOG · Web apps

Web app development cost — an answer that isn't "whatever they say"

2026-08-22 · MAEUM — an AI engineering company that publishes its prices
On MAEUM's price list, web app development is SaaS (managed) = build from ₩700K + ₩490K/mo (servers, operations and improvements included), or SI (ownership) = standard from ₩2.5M · full build from ₩7M. The parts that depend on feature count, integrations and user volume are settled during scoping (₩250K for 5 sessions), so the final price is fixed before you sign. You can build a list-price estimate right now with the quote calculator on our site, and the demo is free.

Why development quotes differ 10× between vendors

The same requirements come back anywhere from a few thousand to tens of thousands of dollars. Three reasons. ① Scope is read differently — is a "member feature" just login, or tiers, payments and notifications too? ② Labor structure differs — how many developers for how many weeks is the quote. ③ The business plan behind the quote differs — some start cheap and plan to earn on maintenance.

So the basis for comparison should never be the total, but how scope is fixed and what the cost structure looks like afterwards.

Development cost in the AI era — why published prices are possible

AI changed development productivity: work that used to take weeks now takes days. MAEUM works AI-native, so our labor cost structure is different, and we return that cost advantage as published list prices. That's why a build from ₩700K is possible.

This isn't a cut-rate approach. Before any contract, you check a real, working demo for free and proceed only if you like it. Judge by the result.

Choosing a cost structure — build-and-done vs build-and-run

A web app isn't finished at launch. Servers run, errors happen, users send requests. So there are two paths.

With SaaS (managed), a monthly report shows what was improved and what was handled automatically — and you can cancel if the value isn't there.

MAEUM list prices — VAT excluded · starting prices · final price confirmed after scoping
Scoping pass (5 sessions)₩250K (≈ $179) · up to 90 min each · working demo included
SaaS · managed (recommended)Build from ₩700K (≈ $500) + ₩490K / ₩990K / ₩1.49M/mo (≈ $350 / $707 / $1,064) — servers, AI, improvements, new features and a monthly report included. No per-seat pricing.
SI · ownershipBuild from ₩2.5M (≈ $1,786); full build from ₩7M+ (≈ $5,000+) — no monthly fee afterwards, care passes when needed

KRW is authoritative; USD figures are approximate. SEO and AI-search visibility work is included in every build at no charge. The demo is free — try it, and sign only if you like it.

Frequently asked questions

Do you build MVPs?
Yes. New-business validation MVPs often start as a SaaS build (from ₩700K) to move fast, then expand on the same track after validation.
Do you build native app-store apps?
Our focus is web apps (browser and mobile web). During scoping we calculate together whether an installable app is truly necessary or a web app is enough, in cost-benefit terms.
Is design included?
Yes — production-grade screen design is part of the build. If you have brand assets, we apply them.
How long does development take?
It depends on scope, and the schedule is fixed during scoping. Because you see the demo before signing, there's no risk of waiting while the direction drifts.
What does adding a feature cost later?
On SaaS (managed), feature consultation and building are included in the monthly fee. On SI (ownership), it's handled via care passes or a separate quote.

See it working before you decide

Tell us what you do and what you need. We'll show you a working demo first — the demo is free.