Correos Prepago
Client
One2One Digital Strategy
Services
Product Design, UX/UI
Design focused on simplifying, scaling, and improving the experience of a financial app from the ground up.
Introduction
Correos Prepago is the fintech service by Correos that allows any user to acquire and recharge prepaid cards directly from their mobile device. The project involved a full redesign of an existing app, with the goal of updating its user experience, improving its structure, and laying the groundwork for a more solid digital ecosystem.
The scope of work wasn’t limited to the app: a web version of the product was also designed, maintaining brand consistency and enabling access for different user profiles. It was an ambitious, forward-looking project, built from the ground up so other teams could continue development smoothly.
The challenge. Redesigning a fintech app with multiple features and a user-centered approach.
The main challenge was to build upon something existing, without starting from scratch, but also without just putting a fresh coat of paint on the current product. It was necessary to identify what to keep, what to evolve, and how to do it without breaking the experience for returning users.
Moreover, the redesign had to respect the branding and structure of Correos Prepago—a well-established visual system—while opening space for new uses, formats, and devices. The solution needed to be solid, flexible, and ready to grow, even after the project handoff.
The value lies in improving what's already there—not to be seen, but to be felt.
Process
The work began with a functional and visual audit of the existing product, analyzing flows, friction points, and real user habits. This research was cross-referenced with a benchmark of current fintech products and our own proposals, with the goal of building a solution that not only improved the previous one, but also met new standards and expectations.
With those insights, the app architecture was redefined and new functionalities were designed in parallel with its web version, thus creating a smooth and coherent experience across both channels.
All work was done in Figma, where foundations, component libraries, and variables were created from the start. This modular structure allowed for efficient sharing of design pieces between app and web, and made it easier to evolve the product, even after our work ended and development transitioned to other teams.
In addition, the project was compartmentalized by functionalities, organizing files by key areas and allowing better coordination between designers, product owners, and developers sprint by sprint.
Requesting a card without getting lost along the way. Flows like card requests were key to the redesign: long processes with validations and sensitive steps that needed to feel simple and manageable. The work focused on clearly structuring the information, making it easy to resume even if not completed in one go, and ensuring that each step made sense as part of the whole. Everything was designed so a complex task would feel like a smooth experience.
Features designed with the user in mind. Beyond the card request, the redesign tackled an entire ecosystem of features meant to make the most of the card. From basic actions—like checking the balance or viewing recent transactions—to more advanced layers like managing top-ups, setting limits, or controlling spending by category. The goal was to build a product that started off easy to understand but could grow with the user’s needs, without losing clarity or functionality along the way.
Conclusions and Learnings
This project reinforced the importance of working on live products without breaking their logic or alienating users. Adding value doesn’t always mean reinventing—it’s about recognizing what already works, proposing strategic improvements, and building a solid foundation for what’s to come. The design work was also organizational: designing systems, methodologies, and processes to foster collaboration between roles and prepare the product to grow without losing consistency.
Making of
The design was fully developed in Figma, with a foundation and variable system that defined typography, spacing, color, and global styles. Based on this, a reusable component library was built to ensure consistency across app and web. Files were organized by functionality and structured into work blocks tailored to each sprint’s needs, allowing different profiles to coordinate effectively and maintain control of the project even during high-complexity phases or multiple parallel deliveries.
