Grapefruit

UX/UI Design

Product design for web and mobile apps

Grapefruit's product design service takes a web or mobile product from idea or legacy interface to a tested, developer-ready design. Our designers run user research, define information architecture and flows, design the UI and a scalable design system, and validate prototypes with real users, for products such as Garanti BBVA's digital banking and the Telekom MyAccount app.

Clients for this service: Work for Garanti BBVA Romania, Telekom Romania, CEZ, Ogre.ai, BCR

Signs you need this

  • You are launching a new digital product and need to validate it before investing in development.
  • Your product works but looks and feels dated next to competitors.
  • Each new feature adds inconsistency because there is no design system.
  • Stakeholders disagree on the direction and there is no user evidence to settle it.

What we deliver

  • User research

    Interviews and tests that define needs and priorities.

  • Information architecture and flows

    Structure, navigation and task flows.

  • Wireframes and prototypes

    Clickable prototypes for testing and alignment.

  • UI design

    Visual design for web and apps, aligned with your brand.

  • Design system

    Components, tokens and guidelines ready for development.

How we work

  1. Discover

    2-3 weeks

    Research with users and stakeholders, goals and constraints.

    You get: Research insights · Product principles

  2. Define

    2-4 weeks

    Information architecture, key flows and wireframes.

    You get: Flows · Wireframes

  3. Design

    3-6 weeks

    UI concepts, prototypes and iteration with users.

    You get: UI design · Prototype

  4. Systemise and hand over

    2-3 weeks

    Design system, specs and support during development.

    You get: Design system · Developer specs

AI in this service

How AI changes product design at Grapefruit

AI-assisted wireframing turns requirements into first layouts in hours instead of days, so more time goes to research and testing. When your product includes AI, we design how it behaves: how the assistant introduces itself, shows sources, admits uncertainty and hands over to a person, in line with EU AI Act transparency duties.

Proof

Product Design work for our clients

The migration of the website was both a challenging and complex project and the support provided by the Grapefruit team was very good, and they were hands-on through the entire technical process. Also, the fact that there was an Agile project management approach in place from start to the end, made the entire way of working efficient and clear from one iteration to the other and I really appreciated the collaboration with them.
Tiberiu Arghir, Digital Marketing Specialist, Garanti BBVA · Read the case study

Industries we deliver product design for

Ways to start

Fixed scopeHalf a day to 2 days, summary within 1 week

Discovery Workshop

Align business, IT and legal on what to build first, in one focused session.

  • Pre-workshop survey
  • Facilitated sessions with your decision makers
  • Prioritised initiative canvas with an owner per initiative
  • Written summary with the recommended next step
Book a discovery workshop
Fixed scope2 to 3 weeks

UX & Conversion Audit

Find what is costing you conversions, ranked by revenue impact.

  • Heuristic and analytics review
  • Funnel drop-off analysis
  • 5 moderated user tests
  • Accessibility check against the European Accessibility Act
Get a conversion audit

Product Design: frequently asked questions

Cannot find your question? Ask a senior specialist directly.

What does product design include?

User research, information architecture, user flows, wireframes, prototyping, UI design, motion where it helps, and a design system with developer specs. For existing products we start with what works today; for new products we start with research and a testable prototype.

Do you redesign existing products or only new ones?

Both. Redesigns start with an audit of the current product and its data, so we keep what users rely on and fix what costs you. New products start with discovery and prototypes, so ideas are tested before development budget is spent.

How do you make designs ready for development?

Developers join design reviews early, components are defined in a design system with states and tokens, and specs cover edge cases, errors and accessibility. Designers stay available during development to answer questions and review what ships.

How long does product design take?

Most product design engagements take 6 to 16 weeks, depending on the number of journeys and platforms. A discovery workshop can produce a first prototype direction in 1 to 2 weeks when you need to align stakeholders quickly.

Can you design AI features and assistants?

Yes. We design conversational interfaces, AI-assisted workflows and dashboards for AI products, such as the Ogre.ai forecasting platform for the energy industry. The focus is trust: clear sources, visible uncertainty, easy correction and a path to a human.

Portrait of Mircea Muraru
Mircea Muraru

Delivery Manager · talk to us about product design

Book a 30-min call

Ready to talk about product design?

Tell us what you need and by when. A senior specialist replies with a clear next step, not a sales deck.

We reply within 1 business day, usually the same day. Not ready to talk? Take the free AI assessment.