Designing a simpler way to pay on campus

izly.fr

Izly is a high-impact financial application used daily across France. Because of its scale and frequency of use, the product carries strong expectations around clarity, reliability, and accessibility. Over time, incremental updates had weakened the experience, creating inconsistencies and friction in core financial actions.

The objective of this project was to address those structural issues while maintaining user trust and operational stability.

Understanding the existing experience

Prior to the interface design overhaul, my line of effort was understanding the way that the product actually worked. This was achieved through a full analysis of the current app experience. This was done through the observation of app navigation and high-level user interaction.

This gave insight on where legacy was forcing the way that the app functioned.

Mapping flows and clarifying structure

From the analysis, I created a map of primary user flows for fundamental activities such as viewing a balance, recharging, and making payments.

From these, I identified unnecessary steps, confusing points, and disparate rules between similar activities that I corrected by restructuring the logic of the user flows and rewriting the information architecture based on genuine user priorities, rather than inherited architecture.

Wireframes focused on clarity and predictability

I translated the validated flows into wireframes to test hierarchy, navigation, and interaction behavior without visual noise. Wireframes were used to resolve layout decisions early, especially around financial information density, error prevention, and progressive disclosure. This stage ensured that the experience made sense structurally before visual design was introduced.

Visual foundation: color and typography

Having ensured the structure was valid, I then established the visual foundation of the application. Decisions on color and typography were made in the interests of clarity and usability rather than stylistic constraints. A number of different color schemes have been tested to check consistency in the disabled, error, and focus states. Typographic design considerations have been made to support scanning and comparisons of monetary information. All of these decisions have been made visually against real content rather than against abstract or optimal designs.
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Accessibility by design

The issue of accessibility was dealt with in a comprehensive manner throughout this project. The interactions designed were conducive to keyboard navigation, focus, and screen reading. Unlike in most projects where accessibility audits are undertaken after design has been done, accessibility was incorporated in the design from the beginning.

This approach made it compatible with the rules for WCAG and RGAA while enhancing usability for all users, not just those using assistive technology.

Building a scalable design system

To ensure long-term consistency, I developed a design system with variables and components that are suited to the product’s requirements. This design system allows for web as well as mobile applications, ensuring proper guidance regarding their use, states, and accessibility guidelines. Color, spacing, and typography have been managed through variables to prevent fragmentation.

Accessibility guidelines have been incorporated into components to ensure that they are not affected by any changes in the product.

Collaboration and implementation

I collaborated with the development team to ensure alignment between design intention and technical capability. The components were checked for drift during development to prevent this, and accessibility aspects such as focus management and keyboard navigation were checked on actual implementations rather than design files.

Outcome

The reworked Izly app helps increase the efficiency of everyday finance operations, boosts trust in a product operated nationally, and decreases cognitive load. Even more significant is that this design remedies a ‘fix-the-problem-as-it-arises' culture with a ‘systemic base for growth' solution that enables access, compliance, and scalability.

This provides a more resilient and inclusive financial experience that can be scaled without losing its clarity and consistencies.