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Full web and desktop apps, from first line of code to launch

Full Products built and maintained by a senior team, not outsourced pieces stitched together.

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“We hired Concealed to re-create our web shop into an app and were pleasantly surprised, not only by the result, but also by the flexibility during development.”

Miguel Blaufuks, Founder and CEOMiguel BlaufuksFounder & CEO, simMarket5.0

Web and desktop apps we've shipped

  • Two simMarket desktop app screens: the browse screen with trending products and top developers in the background, and the Scenery Map screen in front showing a world map with numbered pins marking add-on locations by region.Germany FlagGermany
    • Marketplace

    simMarket

    Migrated a legacy PHP/TWIG web shop into a cross-platform Electron + Vue.js desktop app: custom design system, new built-in add-on installation process, complete UI redesign (browse, checkout, library, vouchers), API development.

    Outcomes

    • • Real-time updates
    • • Streamlined checkout
    • • Integrated download/installation with live notifications
    View Case Study
  • Two Youship web app screens: the browse screen with service category cards, and an orders dashboard showing active deliveries with item lists, delivery routes, and a 'View details' action on each order.Portugal FlagPortugal
    • Technology
    • Logistics

    YouShip

    Redesigned and enhanced the web app: new design system, lower-friction registration flow, orders dashboard, delivery detail screens with route visibility, streamlined checkout, notification system. Figma + React, 2020-2021.

    Outcomes

    • • More organized, modern, visually engaging platform
    • • Shipment management the client described as "simple and stress-free"
    • Simple, stress-free shipment management
    View Case Study

A product built to launch and to scale

We handle the whole build: architecture, interface, and code you actually own.

  • Architecture that scales

    Technical decisions made for where your product is going, not just where it is today.

  • Full ownership of your code

    No lock-in. You get the source code and the freedom to take it anywhere.

  • Cross-platform when it makes sense

    Desktop, web, or both, using tools like Electron and Vue/React where they fit.

  • API & integrations

    Connect to the services your product depends on.

  • Built for long-term maintenance

    simMarket: 20+ years in the market, still our ongoing partnership today.

  • Clean handoff or ongoing partnership

    Hand off with full documentation, or stay on as your long-term dev partner.

From first line of code to launch

A structured process for a real product build.

  1. Step 1

    Discovery & Architecture

    Define scope, technical approach, and system architecture.

    Outputs:

    • Technical plan
  2. Step 2

    Design

    UI/UX design for the full product.

    Outputs:

    • Approved designs
  3. Step 3

    Development

    Frontend, backend, integrations, built in sprints.

    Outputs:

    • Working builds at each milestone
  4. Step 4

    QA & Testing

    Cross-device/platform testing and refinement.

    Outputs:

    • Stable, tested product
  5. Step 5

    Launch & Beyond

    Go live, then ongoing support or a long-term partnership as your product grows.

    Outputs:

    • Live product
    • Support plan

A team that ships and stays

A lot of agencies can build a first version. Here's what's different about working with us.

  • Design and build under one roof

    The same team designs and builds it: no handoff, no translation gap.

  • Long-term partners, not one-off vendors

    simMarket has been a client for years, proof our engagements grow past the first project.

  • Fixed-price, scoped engagements

    Engagements start at $10,000, fully scoped so you know the total cost before we start.

  • Built to hand off cleanly or to keep building with you, your call

    Take it and run or keep us around, you decide.

  • 9+ yearssenior-led
  • 5.0 ★rating on Clutch
  • 30+happy clients

See how the Apps we've built performed

Make your app idea come alive

We'll map the right scope, timeline and price. No commitment needed.

Questions about Desktop and Web Apps

What tech stack do you use?

Depends on the project. Commonly React or Vue, Supabase for backend, and Electron for desktop apps. We pick what's right for your product, not a one-size-fits-all stack.

Do you handle hosting and infrastructure?

Yes, we can set up and manage hosting, or work within your existing infrastructure.

Can you take over an existing codebase?

Yes, we did exactly that with simMarket, migrating a legacy PHP shop into a modern Electron app.

Do you offer ongoing support or a retainer?

Yes, retainers start at $10,000/month for teams that want a long-term dev partner.

How long does a project like this take?

This depends on the project scope but it can be as quick as a month. Book a call so we can learn your goals and provide an estimation.

Do we own the code?

Yes, fully. No lock-in.

Can you build both a web and desktop version?

Yes, that's exactly what we did for simMarket (desktop) and Youship (web).

What's included in the price?

Design, development, testing, and handoff. Infrastructure/hosting costs are scoped separately if needed.

Need something bigger, or something else?

Whatever you're building, we can probably help with what comes next.

  • Framer Websites

    Polished, high-converting Framer websites with custom CMS and premium motion.

  • Internal Tools

    Custom dashboards, admin panels, and internal software built around how your team actually works.

  • MVPs & Prototypes

    Validate your product idea fast, with real design and working code behind it, not just mockups.