14-20 business days

Notion-Powered Business Sites

Design-only or design-plus-prototype for early-stage web applications. Validate your product concept before writing production code.

Get started → See pricing

What it covers.

Building a web application without validated design is how teams spend months developing something that does not work for users. The discovery that the flow is wrong, the mental model is off, or the core feature is not actually useful is painful and expensive at production code stage. At prototype stage it is a day of revisions.

Web App Prototype and MVP Design is for startups and product teams that want to validate their product concept, test it with real users, and hand a working prototype to developers rather than a wireframe deck. The prototype is interactive, navigable, and realistic enough to be tested with actual potential users.

The process starts with product requirements. What problem does the application solve, for whom, in what context. From there we design the key user flows, the interface components, and the states. The deliverable is a Figma prototype with interaction design, plus component documentation for the development team.

We have worked with Spanish startups in pre-seed and seed stage, teams within larger companies building internal tools, and international founders based in Spain who needed a Seville-based design partner. The bilingual Spanish-English deliverable is standard.

Results from this service

A Seville pre-seed startup used this service before their first investor presentation. The interactive prototype allowed investors to experience the product before a single line of production code was written. They closed their initial funding round. The founders cited the prototype as essential to explaining the product in investor meetings.
A product team at a Seville-based software company used this service for a new internal tool. User testing on the prototype revealed a fundamental flow problem that would have required extensive rework at development stage. The fix in prototype took two days. Estimated development rework would have taken three weeks.

What is included

Product requirements and user flow session
Core user journey design (up to 5 flows)
Full interactive prototype in Figma
Component library for development handoff
Responsive design (desktop + mobile web)
Key states: empty, loading, error, success
User testing support (assistance reviewing test results)
Bilingual Spanish + English design documentation
Two revision rounds
Developer handoff session

Questions about this service

This service is design-only. We can recommend development partners if needed. The prototype and documentation are designed to make handoff to any development team as efficient as possible.
Yes. Figma prototypes are navigable in a browser, shareable by link, and realistic enough for investor and user testing purposes.
Notion-Powered Business Sites
Starting from
1.875,85 €
14-20 business days
Start this service → Ask a question
Notion-Powered Business Sites

Ready to begin?

Start a project →