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The Problem

Developers Are Guessing Because the Designs Stop at the Happy Path

Most web app mockups show one perfect screen per page. Real apps have empty lists, slow loads, errors, phones, and several kinds of user, and someone has to design those too.

  1. 01 · Empty lists

    The invoice list has no design for zero invoices.

    Every list and table gets an empty state that tells users what to do first.

  2. 02 · Failed uploads

    Upload errors show a vague message nobody understands.

    Error states explain what went wrong and how to fix it, in plain language.

  3. 03 · Phone layout

    The filter panel has no plan for small screens.

    Each screen is designed at 1440, 1024, and 390 pixels before handoff.

  4. 04 · User roles

    Developers guess which buttons a read-only user sees.

    Role-by-role flows show exactly which actions each user type can take.

Your team signed off on twelve polished mockups for the new client portal. Then the developers started asking questions. What does the invoice list look like with no invoices? What happens when an upload fails? Where does the filter panel go on a phone? Which buttons should a read-only user see? Each answer got improvised in code, so the portal shipped with three table styles and an error page that only says something went wrong.

We start with the tasks each role performs, then design every screen at three widths: 1440, 1024, and 390 pixels. Each screen gets its default, empty, loading, and error state, and every component matches a code library such as MUI or shadcn/ui. Your developers build from complete designs instead of filling the gaps with guesses.

  • Three widths per screen

    Desktop, tablet, and phone layouts for every view, checked against the devices in your analytics.

  • Every state designed

    Empty, loading, error, and success states drawn for each screen, so nothing gets improvised in code.

  • Components that match code

    Figma components named and built to match MUI, shadcn/ui, or your own front-end library.

Our Web App Design Process

From Task List to Build-Ready Screens in Five Steps

You approve the roles and tasks first, then the flows, then the screens, and your developers check the component mapping before handoff.

  1. We walk through the job your web app needs to do, who uses it, and what tools it replaces. You get a scope listing roles, workflows, and screens, plus a fixed price, or a note that an off-the-shelf tool fits.

What's Included

What You Get With Our Web Application Design Services

Every project covers the structure, screens, and states your developers need, designed for the people who'll use the app every working day.

  • Role and task map

    Every user role, what each one needs to do, and which screens and actions each role can see.

  • Task flows and wireframes

    Each workflow mapped step by step, including approvals, permissions, and what happens when something fails.

  • Responsive web app UI

    Web app UI design at 1440, 1024, and 390 pixels, so the app works at a desk and on a phone.

  • Four states per screen

    Default, empty, loading, and error states for every screen, with real messages instead of placeholders.

  • Code-matched component library

    Figma components mapped to MUI, shadcn/ui, or your own library, with names your developers recognize.

  • Developer handoff package

    Dev Mode specs, an annotated prototype, and a component map, delivered with answers to handoff questions.

Compare Options

DeveloperLook vs Template Kit vs In-House Developer

A template kit is fast and cheap for standard admin screens, and a skilled developer can design a simple tool alone. Here's where a web app design company earns its fee.

DeveloperLook
Template kit
Task fit
DeveloperLook: Designed around your roles and tasksTemplate kit: Generic admin layouts
Screen states
DeveloperLook: Four states for every screenTemplate kit: Some states included
Responsive layouts
DeveloperLook: Three breakpoints designedTemplate kit: Responsive by default
Speed
DeveloperLook: 1 to 10 weeks of designTemplate kit: Ready to use today
Code match
DeveloperLook: Mapped to your component libraryTemplate kit: Matches its own library
User testing
DeveloperLook: 5-user test on larger plansTemplate kit: Not included
Ownership
DeveloperLook: Figma files you ownTemplate kit: License terms apply
Cost
DeveloperLook: Fixed price from $700Template kit: Low one-time license

Projects We've Built

Booking platforms, marketplaces, and store back offices our team designed and built, each with admin screens that staff use every working day.

What Our Clients Say

What Clients Say After Launch

Feedback from teams we have designed and built websites and apps for.

We had a pretty specific idea of what we wanted our website to become, but I wasn’t sure how easily we could explain all of it to a development team. There were quite a few moving parts, and we were working toward a deadline, so I expected a few things to get lost along the way. That never really happened. They understood what we were trying to achieve, kept us updated throughout the process, and got everything ready within the agreed timeline. The final site feels much easier to navigate, works beautifully on mobile, and is noticeably smoother for our customers. It was a huge relief seeing the original idea actually turn into the website we had in mind.

Michael BennettFounder & CEO of Northbridge Consulting01 / 03
  • 1,250+

    Projects shipped

  • 10+

    Years of experience

  • Top 3%

    Upwork Top Rated Plus

  • 5 stars

    Average review score

Want results like these?

Tell us what you are building. You get a reply within 24 hours on business days, then a written estimate.

Work Culture

Why Teams Choose Our Web App Design Agency

A web app gets used for hours every day, so small design choices add up. These habits keep our work practical for the people using it and the people building it.

  • Built for daily use

    We design for the person using the app all day, not the person seeing it once in a demo. Keyboard shortcuts, dense tables, and saved filters matter more than animation.

  • Real content, real lengths

    Screens use your actual record names, long addresses, and large numbers instead of lorem ipsum. Layouts that only work with short sample text break on day one.

  • Developers in the loop

    A developer reviews each flow before visual design and each screen before handoff. Anything expensive to build gets flagged while it's still cheap to change.

  • Off-the-shelf when it fits

    If Airtable, a portal builder, or a template kit already covers your workflow, we'll tell you before we quote. Custom design pays off only when your process is specific.

  • Readable for everyone

    Contrast, focus order, and form labels follow WCAG 2.2 AA guidance on the larger plans. Staff who use the app all day benefit from that as much as anyone.

  • Files that stay yours

    Figma files, prototypes, and the component library transfer to you at handoff. Any developer, ours or yours, can build from them without asking permission.

Overview

How do web app design services work for portals and internal tools?

DeveloperLook provides web app design services for client portals, internal tools, and booking platforms. We map each role's tasks, design every screen at desktop, tablet, and phone widths in four states, and match components to a code library such as MUI. Projects start at $700, take 1 to 10 weeks, and you own every Figma file.

DEVELOPERLOOK

Project facts · Web App Design Services

Service
Web App Design Services (task flows, UI for desktop and phone, every screen state, component library)
Typical timeline
1 to 2 weeks for one workflow, 4 to 6 weeks for a web app, 8 to 10 weeks for a portal
Platforms
Client portals, internal tools, booking platforms, and marketplace back offices
Built with
Figma, Figma Dev Mode, MUI, shadcn/ui, and Storybook
Experience
10+ years of development experience and 1,250+ shipped projects
Post-launch support
Handoff questions answered for 2 weeks, up to 6 weeks on larger plans
Communication
Calls in US, UK, and AU business hours
Starting price
From $700 USD, fixed scope after a free workflow call

Reviewed 7 Oct 2026 by Saimul Islam

Good fit

  • Operations teams leaving spreadsheets

    Your team runs bookings, approvals, or inventory in shared spreadsheets, and you're ready for a web app built around how the work really happens.

  • Companies launching a client portal

    You're launching a client portal for invoices, documents, and requests, and you need application design services before your developers estimate the build.

  • Developers waiting on screens

    Your developers are ready to start but keep waiting on screens, and you need web app interface design that answers their questions up front.

  • Marketplaces with busy back offices

    Your marketplace's customer side looks polished, but staff and vendors work in an admin area that was never designed at all.

  • Agencies with portal clients

    Your agency sells portals and internal tools but has no product designer, so every project starts with developers guessing at screens.

Not a fit

  • You need the app built

    You need the app built, not just designed. Our Web Application Development Services page covers the build, from data model to launch.

  • Reporting screens only

    Your project is mostly charts and metrics for managers. Dashboard Design Services is the better page, because it starts from the number each person needs.

  • Native mobile app

    You need an iPhone and Android app, not a browser-based tool. Our Digital Product Design Services page covers web and mobile products designed together.

  • Budget under $700

    Your budget is under $700. A template kit for an admin panel, adjusted by your developer, will cover a simple internal tool well enough.

Not sure we're the right fit?

Book a free call or message us. We'll tell you honestly whether we're the right team.

Pricing

Transparent Starting Prices for Web App Design Services

These are starting points in USD. Your final price depends on how many workflows, user roles, and screen states the app needs, and you get a fixed proposal after a free workflow call.

$1k$2k$3k$4k$5k$700$2,100$4,300

For teams that need one workflow, such as booking or approvals, designed before a build.

$700one-time, USD

Get a fixed quote
  • One workflow, up to 12 screens
  • Desktop, tablet, and phone layouts
  • Default, empty, loading, and error states
  • Clickable Figma prototype
  • Developer review of every screen
  • 2 weeks of handoff questions answered

Recommended

For portals and internal tools that need every screen and role designed before development.

$2,100one-time, USD

Get a fixed quote
  • Everything in Single Workflow
  • Up to 35 screens and 3 user roles
  • Tables, forms, and search patterns
  • Component library mapped to MUI or shadcn/ui
  • Usability test with 5 users
  • 4 weeks of handoff questions answered

For customer portals and multi-role platforms with admin tools and complex data.

$4,300one-time, USD

Get a fixed quote
  • Everything in Web App Design
  • Up to 75 screens and 6 user roles
  • Admin back office and audit views
  • Keyboard navigation and WCAG 2.2 AA checks
  • Design QA reviews of the build
  • 6 weeks of handoff questions answered

For Agencies

White-Label Web App UX Design for Agencies and Studios

You own the client relationship. We supply the web app designers, the task maps, and the Figma files under your brand, so your team can quote portal and internal tool projects with confidence.

How the partnership works

White label: your client only ever sees your brand

  • Your client
  • You, the agency
  • DeveloperLook
  1. Share the client workflow

    Send the processes the app replaces, the user roles, and any spreadsheets in use.

    1. Client needs
    2. You share the details
    3. Details received
  2. We map and design

    Task maps, flows, and screens in every state, delivered within 1 to 10 weeks.

    1. Scope and plan
    2. Proposal to resell
    3. Your quoteYOUR LOGO
  3. Your team builds

    Hand your developers complete Figma files, or add our developers to the build.

    1. Done by our team
    2. Your brand on it
    3. Handed to your clientDone
  • Task maps for scoping

    Role and task maps that make your build estimates more accurate.

  • Back-office patterns

    Tables, filters, and approval flows designed for real business data.

  • Code-ready handoff

    Components mapped to the library your developers already use every day.

  • Behind your brand

    We work as part of your team on every client call.

The Right Technology for Your Project

Technology Stack

We design in Figma against the component library and framework your developers use, then check layouts on real browsers and devices.

    • Figma logoFigma
    • Miro
    • Loom logoLoom
    • Notion
    • MUI
    • shadcn/ui
    • Tailwind CSS logoTailwind CSS
    • Bootstrap
    • Storybook
    • React logoReact
    • Next.js logoNext.js
    • Vue.js logoVue.js
    • Angular
    • Maze
    • Lyssna
    • Google Analytics logoGoogle Analytics
    • BrowserStack

FAQ

Frequently Asked Questions

Straight answers on costs, screen sizes, component libraries, and how app design differs from web design.

  • Web app design at DeveloperLook starts at $700 for one workflow of up to 12 screens. A full web app with 35 screens and 3 user roles starts at $2,100, and portals or platforms with up to 75 screens start at $4,300. The quote depends on screens, roles, and states, and it's fixed after a free workflow call.

  • One workflow takes 1 to 2 weeks, and a full web app takes 4 to 6 weeks. A portal or platform takes 8 to 10 weeks. Most of that time goes into task flows and screen states, not visual polish. Developers can start on approved flows while later screens are still in design.

  • It's the design of software that runs in a browser and that people sign in to for tasks, like a client portal or booking system. It covers user roles, task flows, screens, and states, not just the look. That's what separates it from website design, which focuses on content and marketing pages.

  • A great web app lets people finish frequent tasks quickly and recover easily from mistakes. That means clear navigation, dense but readable tables, helpful empty and error states, and layouts that work on a phone. It also means components developers can build without reinventing them, which keeps the app consistent as it grows.

  • App design focuses on tasks people repeat, while web design focuses on pages people read and act on once. A web designer shapes a homepage for first impressions and conversions. An app designer shapes a screen someone uses dozens of times a week, which calls for different patterns and far more states.

  • Not quite. Web app design overlaps with web design because both run in a browser, but app design deals with user roles, data, and workflows rather than marketing content. Many agencies offer both, so check whether a portfolio shows tables, forms, and multi-step flows before you hire for an app.

  • No, though some designers do both. Web designers usually specialize in marketing sites, branding, and conversion. App designers specialize in interaction design, information architecture, and complex screen states. For a portal or internal tool, hire someone whose past work shows data-heavy screens and workflows, not only landing pages.

  • We design at 3 widths: 1440 pixels for desktop, 1024 for laptops and tablets, and 390 for phones. We also check layouts at 1280 and 1920, then adjust to the devices your analytics show. Internal tools used mostly at desks can put less effort into phone layouts, which lowers the price.

  • Yes, if you name one. We design Figma components that match MUI, shadcn/ui, Bootstrap, or your own library, so developers can build screens from parts they already have. If you haven't chosen one, we recommend a library during the workflow call based on your stack and the screens you need.

  • Yes. Our developers build web apps with React, Next.js, or Vue.js, and the people who designed yours answer questions during the build. You can also take the Figma files to any developer, since they belong to you. We answer handoff questions for 2 to 6 weeks, depending on your plan.

Saimul IslamFounder & CEO, DeveloperLook

Still have questions?

Send a message or book a call with the team.

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