ArchitectureOctober 19, 20264 min read

How Much Does Web App Development Cost

In short

InterLAB references: a web app MVP is 2–5 million ₸ and 6–12 weeks, a turnkey product 5–15 million ₸ and 2–4 months, complex systems with many roles and integrations from 10 million ₸ and 4–8 months. The price is made up of user flows, roles and permissions, integrations, data and reporting requirements — not the number of screens. A web app avoids two cost lines familiar from mobile development: app store publication and a second platform — one codebase runs in every browser.

Contents
  1. 01Budget and timeline references
  2. 02What makes up the price
  3. 03How the budget differs from a mobile app
  4. 04What usually goes into the first version
  5. 05Costs after launch
  6. 06How to get an accurate estimate

Budget and timeline references

Let's start with the numbers. These are InterLAB's public ranges — a sense of scale, not a price list: we give a fixed price after the brief, once the flows, roles and integrations are clear.

2–5

million ₸ — MVP, 6–12 weeks

5–15

million ₸ — turnkey product, 2–4 months

10+

million ₸ — complex systems, 4–8 months

2

weeks to a clickable prototype

Within a range the price depends on scope. A “customer account” can be three screens with an order status, or a system with payments, documents, chat and reports for managers. In an email they sound the same, but they are different projects.

What makes up the price

User flows

Why it affects the price
Every user path means screens, logic, validations and tests
How to save without harm
Keep one main flow, end to end, in the first version

Roles and permissions

Why it affects the price
Customer, manager and admin see and do different things — separate access logic
How to save without harm
Start with two or three roles, add fine-grained rights later

Integrations

Why it affects the price
1C, Kaspi, payments, CRM, messengers — each has its own protocol and its own failures
How to save without harm
Limit the first release to one or two key integrations

Data and reports

Why it affects the price
Operation history, Excel import, exports and analytics need a well-designed data structure
How to save without harm
Basic reports first, complex ones on real demand

Design

Why it affects the price
Custom components take longer to draw and build than standard ones
How to save without harm
Rely on a design system and refine it where it matters

Reliability

Why it affects the price
Backups, an action log, load, security
How to save without harm
Do not save here: it is cheaper to build in from the start than to add later
The most expensive mistakes are underestimated integrations and roles remembered halfway through the project.

How the budget differs from a mobile app

With the same business logic, a web app and a mobile app are priced on the same scale — InterLAB's ranges match. The difference is where the money goes.

Web app

  • One codebase runs in any browser on any device
  • An update reaches every user at once
  • No developer accounts or store reviews needed
  • The user opens the app via a link

Mobile app

  • iOS and Android — two platforms or cross-platform code
  • Updates go through App Store and Google Play review
  • Annual and one-off developer account fees
  • Deeper work with the camera, push notifications and offline mode

What usually goes into the first version

A good first version solves the main task completely rather than every task halfway. A typical web app MVP includes:

  • Sign-in and two or three roles with different rights
  • The main flow end to end: for example, request — processing — result
  • An admin panel for operators and managers
  • One or two integrations the process cannot work without
  • Basic reports and data export
  • Analytics of key user actions
  • Backups and a log of important actions

Complex analytics, rare scenarios, automation of exceptions and a mobile app are usually postponed. They are easier to design once you can see how people use the first version.

Costs after launch

The launch budget is not the last line. Plan the recurring costs in advance so they do not come as a surprise:

  • Server and database — they grow with the number of users and the volume of data
  • Domain and certificate
  • Third-party services: SMS, email delivery, maps, payment fees
  • Support: updates, monitoring, bug fixes
  • Planned development: new features after the first version

How to get an accurate estimate

  1. Describe the flows

    Who uses the app, what they do and what they get in the end. The brief generator helps you put this together in a few minutes.

  2. Gauge the order of magnitude

    The MVP complexity estimate shows the scale by flows, roles and integrations even before you talk to a contractor.

  3. Brief

    At the meeting we go through flows and constraints and clarify integrations and timelines.

  4. Itemised estimate

    We come back with an estimate by stage and a first-release scope that fits your budget.

The price of a web app is set by its flows and integrations, not by the number of screens.
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