Hi, I’m Caroline Martins — a UI/UX and Visual Designer based in Sweden.
I design clean, accessible interfaces and thoughtful user experiences for mobile apps and digital products. With a strong background in graphic design, I bring brand consistency and visual clarity to every screen. Currently crafting products at Appspotr Studios.

Case Study

Nordiska Kompaniet

Internal Communication App & Web Platform

Brinova Fastigheter

Tenant Engagement and Property Management App

Bookhub

Marketplace App and Style Guide Design

Ung i Värmdö

Youth Engagement App for Värmdö Municipality

Ava Sutton

Author Logo, Logo Usage Guide, and Website

Ava Sutton - Author Logo, Logo Usage Guide, and Website

Ava Sutton approached me to craft a distinctive visual identity and online presence ahead of her debut book launch. With a desire for a modern and minimal aesthetic, the project focused on designing a logo and website that would embody her personal style while creating a professional and inviting experience for her readers.

RolePlatformArea
UI/UX Designer, Visual DesignerResponsive WebsiteBrand Identity, Logo Design, Visual Design, Web Design, User Experience

Goal

Create a modern, minimal, and elegant brand identity for Ava Sutton’s debut book that reflects her personal style and writing tone. Design a responsive website that showcases her work and engages readers effectively.

Challenge

- Develop a simple yet impactful logo that balances professionalism with approachability.
- Ensure the brand identity aligns with the mood and theme of Ava’s novel.
- Design a cohesive website that incorporates the book’s color palette.
- Make the website accessible, intuitive, and fully responsive across devices.

Design Process

Logo Design:- Collaborated closely with Ava to understand her vision and preferences.
- Explored multiple logo concepts emphasizing minimalism and timelessness.
- Selected a serif font with custom spacing for a refined but friendly look.
- Created a comprehensive logo usage guide to maintain consistency.
Website Design:- Designed a clean, user-friendly responsive website.
- Incorporated brand colors: light blue, navy blue, and pink accents for visual harmony.
- Focused on clear navigation, readable typography, and strong calls to action (e.g., pre-orders).
- Integrated social media links for seamless reader engagement.

Outcome

- Delivered a polished logo and brand identity that resonated with Ava’s style.
- Developed a visually appealing and functional website supporting marketing efforts.
- Created a memorable and consistent brand experience that helped drive pre-orders and build audience engagement.

📱 Ung i Värmdö — App for Värmdö Municipality

Värmdö is a vibrant municipality in the Stockholm archipelago experiencing significant growth. With a large portion of its population being young people, the municipality recognized the importance of creating an accessible and engaging communication channel tailored specifically for youth. The new app serves as a central hub for activities, events, and support resources — designed to empower young residents and strengthen community connection.

RolePlatformArea
UI / UX Designer, Project Manager, Customer SuccessNative iOS app, native Android app, and Progressive Web App (PWA) — allowing kids and teens to access the app seamlessly on smartphones as well as on school Chromebooks and other devices.UX/UI Design, Strategy, Project Management, Customer Success, Interaction Design

Goal

The rapidly growing archipelago municipality of Värmdö wanted a dedicated digital channel to better engage its large youth population (26% under 19 years old). The goal was to provide young residents and their guardians with quick, easy access to information about local activities, events, support services, and ways to influence community decisions — all from their mobile devices.

Challenge

- Existing communication methods were fragmented, making it difficult to reach young people effectively.
- Information about activities and support was scattered across multiple channels and locations.
- The municipality needed a platform they could control and update themselves, ensuring timely and accurate communication.
- Engaging a mobile-first, youth audience required an intuitive and appealing user experience.

Design Process

- Conducted stakeholder interviews with the municipality’s development team to understand communication needs and target user behaviour.
- Researched the habits and preferences of Värmdö’s youth to inform user experience and feature prioritization.
- Designed a mobile-first low code app for iOS and Android, complemented by a web client and CMS for content management.
- Focused on creating clear navigation and accessible content hubs: events calendar, meeting places, contact info, support resources.
- Included interactive features allowing youth to share opinions and influence local decisions, fostering community involvement.
- Worked closely with the municipality team as Project Manager and Customer Success lead to ensure smooth implementation and adoption.

Outcome

- Delivered a modern, user-friendly app that centralizes youth-focused information in one accessible place.
- Empowered Värmdö municipality to manage content and user engagement directly via the CMS.
- Enhanced communication speed and clarity, making it easier to distribute urgent messages and daily updates.
- The app is now an essential digital channel reaching the municipality’s youth and guardians — all conveniently in their pockets.
- Received positive feedback from stakeholders praising the app’s role in community connection and support.

Bookhub — Marketplace App and Style Guide

A marketplace app connecting authors and publishers with talented book designers and illustrators. Designed a cohesive visual identity and comprehensive style guide to ensure consistent branding and seamless user experience.

RolePlatformArea
UI/UX DesigneriOS, AndroidUX/UI Design, Branding, Visual Design, Style Guide Development, Mobile Optimization

Goal

Bookhub aimed to create a specialized marketplace app connecting authors and publishers with talented book designers and illustrators. The challenge was to design a platform that makes it easy to discover, evaluate, and hire creatives, while maintaining a consistent and engaging brand identity across the entire app.

Challenge

- Building a visual system that inspires creativity but stays professional and trustworthy.
- Designing intuitive navigation for diverse user groups: designers showcasing their work and clients searching for services.
- Ensuring consistency across multiple UI components and pages through a comprehensive style guide.
- Integrating features like reviews, secure payments, and filtering without overwhelming users.

Design Process

- Conducted user research to understand needs of designers and clients.
- Created wireframes and prototypes to map user flows and interactions.
Designed a comprehensive style guide including:
- A vibrant yet balanced color palette
- Modern, readable typography
- Guidelines for layout, spacing, and UI components
- Refined designs continuously through user and stakeholder feedback.
- Collaborated closely with developers to ensure design fidelity during implementation.

Outcome

- Launched a polished app experience that streamlines connecting authors with designers.
- Delivered a living style guide serving as a design system for future scalability.
- Improved user engagement and trust with clear visuals and secure features.

🏢 Brinova Fastigheter - Tentant App

Brinova Fastigheter AB, a real estate company with a strong presence in southern Sweden, needed a modern tenant-facing app to improve communication and make property-related information easily accessible. I was responsible for the UI/UX design of the app, with a focus on clarity, responsiveness, and usability for both tenants and administrators.

RolePlatformArea
UI/UX Designer & Developer CoordinationIOS, AndroidUI Design, UX Design, Prototyping, User Testing, Interaction Design

Goal

To create a user-friendly mobile app that would reduce manual inquiries and streamline how Brinova tenants access important updates, rent details, property documents, and report issues—all while staying true to Brinova’s brand identity.

Challenge

- Encourage adoption of the app by clearly communicating its value to tenants.
- Design for a wide range of user ages and tech-literacy levels.
- Avoid overwhelming users with menus by prioritizing clarity and quick access.
- Integrate a secure admin system for property managers to update content in real time.
- Maintain strong alignment with Brinova’s existing brand identity.

Design Process

User-Centered Flow Design:
Designed a clean, intuitive layout that made it easy for tenants to access what they need—rent details, building updates, documents—with minimal taps.
First-Screen Priority Navigation:
Replaced the common bottom menu with large, direct buttons on the home screen to highlight the most-used features (e.g., News, Documents, Report an Issue).
Issue Reporting Feature:
Integrated a reporting function allowing tenants to submit common maintenance issues, such as problems with keys, washers, or heating, directly through the app.
Admin Dashboard Integration:
Created a separate admin login for Brinova’s property managers to upload news, PDFs, and updates instantly—ensuring tenants always see the latest info.
Brand Integration:
Matched the app’s design language to Brinova’s website and visual identity for consistency across all channels.
Prototyping & User Testing:
Built prototypes and ran internal tests to validate user flows, simplify interactions, and ensure the app felt intuitive across different user types.

Solution

We designed a mobile-first app with large, accessible action buttons on the home screen to simplify navigation. A secure admin login allowed Brinova’s team to update news and documents in real time, ensuring tenants always had the latest information at their fingertips.

Outcome

- The app achieved widespread adoption among tenants across all Brinova properties.
- Significant reduction in phone calls and manual inquiries to property managers.
- Tenants gained easy access to important documents and real-time property updates.
- Property managers were empowered with an admin dashboard to update content independently and instantly.
- High user satisfaction due to the clean, simple interface and intuitive navigation.
- Improved communication flow between tenants and property management, leading to faster issue resolutions.

🛍️ NK Spirit – Internal Communication App & Web Platform

An internal communication tool for Nordiska Kompaniet (NK), one of Sweden’s most iconic department stores. The solution included a mobile app and a web-based desktop platform tailored for over 1,600 employees.

RolePlatformArea
UI / UX Designer and Developer Team ContributorNative iOS app, Native Android app, Responsive Web app, Web-based CMSUX/UI Design, Interaction Design, Team Coordination, Prototyping, Developer Handoff

Goal

NK wanted to strengthen internal engagement and unify communication across locations. They needed a modern, flexible system that matched their long-standing heritage while offering a personalized user experience for every employee, whether on the shop floor or at a desk.

Challenges

- Delivering a fully personalized experience that dynamically adapts content by role and location
- Designing consistent and intuitive UI across multiple platforms and device types
- Integrating NK’s historic brand spirit into a modern digital experience
- Ensuring accessibility and ease of use for a diverse user base

Design Process

- Conducted stakeholder interviews and user workflow analysis.
- Developed wireframes and prototypes focused on personalization and usability.
- Created a scalable design system adaptable across iOS, Android, and web.
- Collaborated closely with developers for smooth implementation.
- Incorporated features like social engagement, geo-check-ins, and personalized feeds.

Solution

Delivered an internal communication platform providing personalized content feeds via native apps and responsive web. This solution improved information flow and employee connection while respecting NK’s heritage.

Outcome

- NK Spirit became the main internal communication channel, boosting engagement.
- Received positive feedback for intuitive design and personalized experience.
- Fostered a stronger company culture through digital community-building.
- Achieved high adoption rates across the workforce.

© Caroline Martins 2025