In the previous blog article on the importance of design for a mobile app we explain you some points about User Experience (UX), Responsive Design, navigability and usability… we explain you some points about User Experience (UX), Responsive Design, navigability and usability…

Speed Optimisation

Impact of design on application performance

Design is not only aesthetic; it also affects the performance of the application. We will analyse how efficient design contributes to the overall performance of the application.

Strategies for optimising speed without compromising on design

We will discover effective strategies to optimise application speed without sacrificing design quality, ensuring a smooth user experience.

  1. Graphics Resource Optimisation: Images and graphical elements can significantly affect performance. By optimising the size of images and using efficient formats, such as WebP, the load on resources is reduced, improving loading speed.
  2. Minimisation of Requests to the Server: Each element on a page usually requires a request to the server. Efficient design minimises the number of requests, reducing loading time. Grouping files and using concatenation techniques can improve efficiency.
  3. Deferral of Non-Essential Resource Charges: By deferring the loading of non-essential resources such as scripts or images to the bottom of the page, it ensures that critical elements are loaded first, improving the perception of speed for the user.
  4. Efficient use of CSS and JavaScript: Avoiding excessive use of unnecessary CSS and JavaScript contributes to faster performance. Minifying and combining CSS and JavaScript files, as well as loading scripts asynchronously, are practices that improve the speed of the application.
  5. Diseño Responsivo para Dispositivos Móviles: Responsive design not only improves the user experience on mobile devices, but also helps performance. Adapting the layout according to the device avoids loading unused resources on smaller screens.
  6. Effective Caching: Using caching techniques reduces the need to repeatedly load resources. Caching images, scripts and other static elements allows for faster loading on subsequent visits.
  7. Reducing Redirects: Reducing or eliminating unnecessary redirects decreases application load time. Each redirect involves an additional request to the server, which can negatively affect performance.
  8. Resource Compression: Compressing files before sending them to the user’s browser reduces loading time. Gzip or Brotli compression of CSS, JavaScript and HTML files minimises the transfer size, improving efficiency.
  9. Continuous Performance Monitoring: Implementing performance monitoring tools, such as Google PageSpeed Insights or Lighthouse, allows you to identify areas for improvement. Constant monitoring ensures that the application maintains optimal performance over time.
  10. Prioritisation of Visible Content: By loading visible content first and deferring the loading of non-essential elements, the perception of speed is improved. This is especially relevant for users with slower connections.

The design of an application has a direct impact on its performance. A careful focus on optimising resources, minimising requests and implementing efficient practices will contribute to a faster and more responsive application, improving the user experience.

How speed influences user retention

Loading speed has a direct impact on user retention. We will explore how optimised design contributes to a fast and satisfying experience.

  1. Experiencia Instantánea: Customers value immediacy. A fast-loading application provides an instant experience and meets users’ expectations, which promotes user retention.
  2. Rebound Rate Reduction: Slow loading can increase the bounce rate, as users tend to abandon an application if it does not load quickly. Fast loading minimises this rate, which means that more users interact with and stay in the application.
  3. User Satisfaction: Speed in the execution of actions within the application contributes to user satisfaction. Users enjoy a smooth and uninterrupted experience, which positively influences their decision to continue using the application.
  4. Retention in the First Interaction: Loading speed is especially critical in the first interaction. If an application does not load quickly from the start, it is likely that users will not try again, affecting retention from the start.
  5. Optimisation for Mobile Devices: Given that many interactions occur on mobile devices, speed is even more vital. Mobile users are particularly sensitive to loading times, and a fast application aligns with their expectations of efficiency.
  6. Increased Participation and Continued Use: Speed not only impacts retention, but also influences continued participation. An application that responds quickly to user actions encourages greater usage and constant participation.
  7. User Experience (UX) Optimisation: Speed is directly related to the quality of the user experience. Fast loading improves the overall perception of the application and strengthens the relationship between the application and the user, encouraging user retention.
  8. Response to Variable Network Conditions: The speed also takes into account the varying network conditions to which users may be exposed. An application that loads quickly even on slower connections demonstrates robustness and improves retention in a variety of situations.
  9. Effect on Long-Term Retention: Speed not only influences initial retention, but also long-term retention. Users who consistently experience a fast application are more likely to continue to use it over time.


Inclusive design and accessibility in mobile applications

Ensuring inclusive and accessible design in mobile applications is essential to reach a diverse audience and provide an equal experience for all. Key aspects of inclusive design and accessibility are explored here:

  1. Design for All Users: An inclusive approach involves designing for the needs of all users, regardless of their physical, cognitive or sensory abilities. This ensures that the application is usable by as many people as possible.
  2. Use of Contrast and Accessible Colours: Selecting high contrast colours improves readability for visually impaired users. Ensuring that important texts and elements have sufficient contrast makes them easier to read for all users..
  3. Alternative Text for Images: Providing alt text descriptions for images benefits visually impaired users. These descriptions allow screen readers to convey relevant information about the images.
  4. Intuitive Navigation: Clear and logical navigation is essential for users with cognitive or motor disabilities. Labelling elements in a coherent way and organising information logically facilitates understanding and interaction.
  5. Adaptability to Assistive Technologies: Designing with assistive technologies in mind, such as screen readers, ensures that the application is accessible to visually impaired users. This involves labelling elements appropriately and ensuring structured navigation.
  6. Accessible Touch Controls: Optimising the touch controls to be larger and further apart reduces the possibility of errors for users with limited motor skills. This enhances the tactile experience and facilitates interaction.
  7. Read Aloud Compatibility: Enabling read aloud functionality benefits users with visual impairments or reading difficulties. This allows content to be listened to rather than read, improving accessibility.
  8. Friendly Virtual Keyboard: Ensuring that the application is fully functional through a virtual keyboard facilitates accessibility for users with motor disabilities. This includes the ability to navigate and perform actions without relying solely on touch.
  9. Inclusive Form Design: Simplifying and structuring forms in a clear way benefits users with cognitive disabilities. Appropriately labelling fields and providing contextual aids improves the experience for all.
  10. Upgrades and Ongoing Maintenance: Accessibility must be a continuous process. Regular updates based on user feedback and best practices ensure that the application remains accessible as technologies and standards evolve.
  11. Development Team Awareness Raising: Educating the development team about the importance of accessibility and inclusive design creates a user-centred mindset. Awareness and commitment are key to integrating these practices at all stages of development.

Tools and practices to ensure accessibility

Ensuring accessibility in mobile applications involves the use of tools and the implementation of specific practices. Here are some key tools and practices for ensuring accessibility:

  1. Screen readers: Tools such as VoiceOver for iOS and TalkBack for Android are screen readers that convert text into speech. Testing the application with these readers helps to identify areas that may need to be improved in terms of accessibility for visually impaired users.
  2. AXE Accessibility Checker: This Google Chrome tool allows accessibility audits to be performed directly in the browser. It identifies common accessibility problems and provides suggestions to correct them, facilitating continuous improvement.
  3. Color Contrast Checker: Checking colour contrast is essential for visually impaired users. Online tools such as WebAIM Contrast Checker help assess the contrast between text and background, ensuring proper legibility.
  4. Accessible Colour Palette: Using colour palettes that comply with accessibility standards, such as the WCAG guidelines, ensures that visual information is clear to all users. Tools such as Color Safe help to generate accessible colour schemes.
  5. WAVE Web Accessibility Evaluation Tool: This tool provides a visual assessment of the accessibility of a web page or application. It provides detailed information on possible accessibility problems and suggests solutions.
  6. Arias and Alt: Tagging images and multimedia elements with ARIA (Accessible Rich Internet Applications) attributes and providing descriptive alt tags improves the experience for visually impaired users. Web development tools, such as Chrome DevTools, allow you to verify the implementation of these tags.

Benefits of accessible design for a wider audience

Implementing accessible design in mobile applications not only meets ethical standards, but also offers a number of significant benefits that positively impact a wider audience. Here are some of the key benefits:

  1. Inclusivity and Equity: An accessible design ensures that the application can be used by users with various abilities and disabilities. This promotes inclusiveness and ensures that all users have equal access and opportunities, regardless of their abilities.
  2. Extending the Scope: By prioritising accessibility, the application can reach a wider audience. This includes people with visual, hearing, motor and cognitive disabilities, as well as those who may be using assistive technologies. Inclusive design maximises the reach and utility of the application.
  3. Improving User Experience: Accessible design not only benefits users with disabilities, but improves the experience for all. Elements such as clear navigation, legible colours and efficient touch controls make the application more intuitive and user-friendly for all users.
  4. Compliance with Regulations and Standards: The implementation of accessible design practices ensures that the application complies with recognised regulations and standards, such as the Web Content Accessibility Guidelines (WCAG). Complying with these regulations is not only ethical, but may also be a legal requirement in some cases.
  5. Positive Reputation: Demonstrating a commitment to accessibility enhances the reputation of the application and the developer. Users appreciate brands that prioritise inclusivity and fairness, which can build loyalty and trust in the user base.
  6. Improved SEO: An accessible design can improve search engine visibility. Search engines value accessibility, and practices that improve the user experience, such as clear and readable design, can contribute positively to ranking in search results.
  7. Innovation and Creativity: The implementation of accessible solutions often drives innovation and creativity in design. Finding ways to make the application accessible to all can lead to unique and attractive solutions that benefit the entire audience.
  8. Improving User Retention: A positive and accessible experience encourages user retention. Users, regardless of their skills, are more likely to use and stick with an application that effectively meets their needs.

By considering and applying accessible design principles, mobile applications can offer significant benefits to a wider audience, promoting equal access, user satisfaction and a positive reputation in the marketplace.


In conclusion, this comprehensive analysis convincingly highlights that design plays a key role in the success of mobile applications. From initial user engagement to long-term retention and inclusivity, every aspect of design directly impacts the user experience and ultimately the performance of the application.

At Yapiko, we recognise the integral importance of design in all phases of mobile application development. Our commitment is to deliver applications that are not only competitive and functional, but also provide an optimal and equitable experience for all users.