UX/UI Design & App Design Services

UX/UI Design Services for Apps, Platforms & Digital Products

A beautiful interface means nothing if users struggle to complete their goals.

At DAHSIGN, I help startups, businesses and organizations design intuitive digital experiences that improve usability, strengthen customer satisfaction and support business growth.

Whether you’re launching a new app, redesigning an existing platform or validating a new idea, every project is built around real users and business objectives.

Based in Rotterdam, serving businesses throughout Amsterdam, Delft, Gouda, the Netherlands and the Dutch Caribbean.

What I Bring to the Table

Strategic UX/UI Expertise for Better Digital Experiences

explore new possibilities

User Experience Strategy

Research and planning that align user needs with business goals.

User Interface Design

Professional interfaces designed to be visually appealing and easy to use.

Accessibility-First Thinking

Designs that consider different users, abilities and devices.

User Flows & Customer Journeys

Understanding how people move through your product.

Wireframing & Prototyping

Testing ideas before development begins.

Design Systems

Creating consistency across screens and future product growth.

Packages

Every business is at a different stage.

Whether you’re validating a new idea, preparing for development or scaling an existing platform, there’s a package designed to support your goals.

The Perfect UX/UI Package for Your Product

Discovery

From €1500

Validate Your Idea Before Development.

Perfect for startups and businesses looking to explore, validate and define a digital product concept.

  • Discovery Workshop
    Business goals, user needs and project requirements.

  • User Flow Mapping
    Visualize how users move through your product.

  • User Journey Mapping
    Identify key interactions and pain points.

  • Wireframes for Up to 5 Screens
    Low-fidelity layouts focused on structure and usability.

  • Basic Competitor Review
    Identify opportunities and industry standards.

  • Clickable Prototype
    Test and communicate your concept before development.

Results You Can Expect:

 

  • Greater clarity
  • Better product planning
  • Stronger decision-making
  • Reduced development risk

Delivery Time: 15days
Revision: 2 Rounds

Growth

From €3500

Design a Better Product Experience.
Perfect for startups and businesses ready to transform concepts into professional, development-ready user experiences.

  • Everything in Discovery

  • UX Audit & Recommendations
    A structured review of your product’s usability, navigation and user experience.

  • User Flow Optimization
    Refine journeys to reduce friction and improve task completion.

  • Wireframes for Up to 15 Screens
    Detailed wireframes covering key user journeys.

  • High-Fidelity UI Design
    Professional visual design tailored to your brand and users.

  • Interactive Prototype
    Clickable prototype suitable for testing and stakeholder presentations.

  • Accessibility Review
    Review based on accessibility best practices and inclusive design principles.

  • Developer Handoff Documentation
    Design specifications prepared for development teams.

Results You Can Expect

  • Improved usability

  • Better user engagement
  • More efficient user journeys
  • Development-ready designs
  • Reduced redesign costs

Delivery Time: 25 days
Revision: 3 Rounds

Elite Branding

From €7500

Create a Scalable Product Experience

Perfect for organizations, SaaS companies and startups building complex digital products that require research, consistency and long-term scalability.

  • Everything in Growth, PLUS:

  • UX Research & User Interviews
    Gather insights directly from users to support design decisions.

  • Customer Journey Mapping
    Identify opportunities to improve experiences across multiple touchpoints.

  • Wireframes for Up to 30 Screens
    Comprehensive wireframing for larger platforms and applications.

  • Advanced UI Design
    High-fidelity interfaces designed for usability, accessibility and growth.

  • Design System Creation
    Reusable design components and standards for future product development.

  • Component Library
    A scalable library of UI elements and patterns.

  • Accessibility Evaluation
    Comprehensive review focused on inclusive and accessible user experiences.

  • Developer Handoff Documentation
    Detailed specifications for seamless implementation.

  • Brand Asset Organization
    Organized folder structure for easy long-term use for fonts, logo files, colors, socialmedia assets.

  • Product Growth Recommendations
    Strategic recommendations for future improvements and scalability.

Results You Can Expect

  • Consistent user experiences

  • Improved accessibility
  • Stronger product adoption
  • Reduced design debt
  • Scalable product growth
  • Faster development workflows

Delivery Time: 40 days
Revision: 3 Rounds

UX/UI & App Design Add-Ons

Additional Screen Design

Includes:

  • Wireframe
  • Prototype Integration
  • Responsive Layout
  • High-Fidelity Design

€150 Per Screen (+1 Day)

User Testing Session

Includes:

  • Test Plan
  • Findings Report
  • Improvement Recommendations
  • Moderated Testing Session
  • Up to 5 Participants

€450 (+5 Days)


Accessibility Audit

Includes:

  • WCAG-Based Review
  • Accessibility Findings Report
  • Prioritized Recommendations
  • Accessibility Scorecard

€950 (+7 Days)

UX Workshop

Includes:

  • Up to 3-Hour Workshop
  • Feature Prioritization
  • Workshop Summary
  • User Journey Exercises

€650 (+3 Days)

UX Research Sprint

Includes:

  • Research Plan
  • Key Insights & Opportunities
  • Research Summary
  • User Interviews
  • Competitor Analysis

€1250 (+10 Days)

Design System Expansion

Includes:

  • Additional Components
  • Figma Organization
  • Documentation
  • States & Variants

€1500 (+10 Days)

Developer Support

Includes:

  • Design Clarification Sessions
  • Up to 5 Hours of Consultation
  • Developer Handoff Support
  • QA Feedback

€450 (+5 Days)

The process

How We’ll Work Together

explore new possibilities

Discovery & Alignment

We begin by understanding your business, users, goals and challenges.

This phase helps clarify:

  • Business objectives
  • Product vision
  • Target audience
  • User needs
  • Project scope

Outcome: A clear understanding of what we’re building and why.

Strategy & Research

Before designing screens, we identify opportunities to improve the user experience.

Depending on the project, this may include:

  • Competitor Analysis
  • User Journey Mapping
  • User Flow Mapping
  • UX Audits
  • Accessibility Considerations
  • Product Strategy Workshops

Outcome: A strategic foundation that reduces guesswork and supports better design decisions.

Wireframing & Structure

We create low-fidelity wireframes to define layout, functionality and user interactions before visual design begins.

This allows us to:

  • Test ideas quickly
  • Improve usability
  • Validate user flows
  • Reduce development rework

Outcome: A structured blueprint for your product.

UX/UI Design

Once the structure is approved, we transform wireframes into polished, user-friendly interfaces.

This phase includes:

  • Visual Design
  • Component Design
  • Interaction Design
  • Responsive Layouts
  • Accessibility Best Practices
  • Brand Integration

Outcome: A professional, intuitive and visually consistent digital experience.

Prototyping & Validation

Interactive prototypes allow stakeholders, users and developers to experience the product before development begins.

This phase may include:

  • Clickable Prototypes
  • User Testing
  • Feedback Collection
  • Design Refinements

Outcome: Increased confidence before investing in development.

Developer Handoff & Support

Once designs are finalized, everything is prepared for implementation.

Deliverables may include:

  • Design Specifications
  • Design System Documentation
  • Asset Exports
  • Component Libraries
  • Developer Support

Outcome: A smoother transition from design to development.