To design a GUI that supports both mobile and web versions of a social network, consider the following strategies:

- Use responsive design to adapt the layout to different screen sizes and devices

- Design for touch and click interactions, considering finger sizes and mouse pointers

- Prioritize content and features for smaller mobile screens

- Utilize mobile-specific features like swipe gestures and camera access

- Ensure consistent branding and visual identity across platforms

- Use platform-agnostic design elements and typography

- Optimize for various network speeds and connectivity

- Test and iterate on both mobile and web versions simultaneously

- Consider a mobile-first design approach

- Use flexible grids and layouts to accommodate different screen sizes

- Design for seamless transitions between devices and platforms

- Ensure accessibility features like font size adjustment and high contrast modes

By following these strategies, you can create a cohesive and user-friendly GUI that provides a consistent experience across both mobile and web versions of the social network.