Product Design UI UX

Ernesto Pérez

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About this service

Summary

I design intuitive, high-performing mobile and web apps that don’t just look great but also drive engagement and business growth. With a user-first approach, I create sleek, conversion-focused experiences backed by research, wireframes, interactive prototypes, and developer-ready assets. What sets me apart? A seamless blend of design and development expertise, ensuring your app is not only visually stunning but also built for scalability and real-world impact. 🚀

Process

1. Discovery & Strategy (Understanding Your Vision)
We start by defining the goals, users, and competitive landscape of your app.
Kickoff call to discuss your vision, business objectives, and user needs
User research & personas to understand your ideal users and their pain points
Market & competitor analysis to identify gaps and opportunities
Feature prioritization to define core functionalities and must-have features
2. Wireframing & User Flow (Structuring the Experience)
Before diving into visuals, we map out the app’s functionality.
User journey mapping to ensure smooth navigation and intuitive interactions
Low-fidelity wireframes to structure the app’s layout and features
Prototyping basic interactions to test core user flows before final design
3. UI Design & Branding (Bringing Your App to Life)
Now, we craft a beautiful, intuitive interface that enhances the user experience.
Moodboards & style exploration to define the app’s look & feel
High-fidelity UI design with pixel-perfect, visually stunning screens
Dark & light mode (optional) for a seamless, accessible experience
Animations & microinteractions to enhance usability and engagement
4. Interactive Prototyping & Testing (Validating Before Development)
Before handing off to developers, we test and refine the experience.
Clickable prototype in Figma/XD to simulate real-world interactions
User testing & feedback (optional) to gather insights for improvements
Revisions & final tweaks to ensure a polished experience before development
5. Design Handoff & Developer Collaboration (Ensuring a Smooth Build)
I ensure developers have everything they need for pixel-perfect execution.
Organized design files (Figma/XD/Sketch) for easy navigation
Component-based UI kit & design system for scalable and reusable elements
Development-ready assets, including optimized icons, buttons, and illustrations
Detailed design specs & annotations for spacing, typography, colors, and interactions
Support during development to ensure smooth implementation
6. Post-Launch Support & Iteration (Optimizing for Growth)
The work doesn’t stop at launch—I help ensure your app evolves and scales.
Performance analysis & optimization to identify usability improvements
User feedback-driven enhancements based on real-world usage
Ongoing support & updates (optional) for continuous improvements

FAQs

  • What’s included in your app design service?

    My app design service includes user research, wireframing, UI/UX design, prototyping, and a developer-ready design handoff. You’ll receive a fully structured, high-fidelity design that is optimized for both usability and visual appeal.

  • Do you develop the app as well?

    I specialize in designing apps, ensuring a seamless and engaging user experience. However, I can collaborate closely with developers.

  • How long does the app design process take?

    The timeline depends on the complexity and scope of the project. On average: - Basic app designs take about 3-4 weeks - Mid-sized apps take 4-6 weeks - Large-scale apps with complex interactions may take 6-8+ weeks

  • What do I need to provide before we start?

    To ensure a smooth process, I typically need: - A clear brief or idea of what you want to build - Any existing branding guidelines (logos, colors, fonts, etc.) - Details on target users and key features - References or examples of apps you like (if applicable) - If you’re unsure about any of these, I can guide you through the process.

  • Can I request revisions during the design process?

    Yes! I include a set number of revision rounds in each project to ensure the final design meets your expectations. Major scope changes may require additional time and cost adjustments.

  • Will my app design be unique?

    Absolutely! I don’t use templates—I craft custom, user-focused designs tailored to your brand, audience, and goals.

  • What tools do you use for design?

    I primarily use Figma, for wireframing, UI design, and prototyping. I also use Miro for user flows and journey mapping.

  • Can you work within my existing brand guidelines?

    Yes! If you already have branding elements (logos, fonts, colors), I will seamlessly integrate them into your app design for consistency.

  • Do you provide a design system or UI kit?

    Yes! I create a scalable design system with reusable components, typography, colors, and UI elements to ensure consistency and efficiency in development.

  • How do you ensure a smooth developer handoff?

    I provide: - Well-organized Figma files - A component-based design system for scalability - Detailed annotations and specs for colors, fonts, and spacing - Exported assets (icons, buttons, illustrations) in all necessary formats - Direct collaboration with developers to ensure proper implementation

What's included

  • UX Research & Strategy

    User Personas & Journeys – A deep understanding of your audience and how they’ll interact with your app. - Competitive Analysis – Insights to make your app stand out. - Information Architecture – A clear, logical structure for effortless navigation.

  • Wireframes & User Flow

    - Low-Fidelity Wireframes – A blueprint of your app’s layout and navigation. - User Flow Diagrams – A step-by-step visual of how users move through your app.

  • High-Fidelity UI Design

    - Pixel-Perfect Screens – A stunning, modern UI that aligns with your brand. - Responsive & Scalable Design – Optimized for different screen sizes (mobile, tablet). - Dark & Light Mode (If Required) – A smooth, accessible experience for all users.

  • Interactive Prototypes

    - Clickable Prototype – A fully interactive version of your app for testing. - User Testing Feedback (Optional) – Insights to refine the design before development.

  • Design System & Components

    - Organized Figma Files – Ready-to-code, well-structured design files. - Design Specifications & Annotations – Clear guidelines on spacing, fonts, colors, and interactions. - Assets & Icons (Exported in All Formats) – SVG, PNG, WebP, and any required formats.

  • Post-Delivery Support (Optional)

    - Collaboration with Developers – Assisting in implementation for pixel-perfect results. - Iterations Based on User Feedback – Refinements after initial testing.

  • Get a High-Quality, Development-Ready App Design

    Your app isn’t just another project—it’s an experience that needs to be engaging, intuitive, and conversion-focused. Let’s design something that users will love.

Skills and tools

Mobile Designer

UX Designer

Product Designer

Figma

Figma

Framer

Framer

Miro

Miro

Webflow

Webflow

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