Apple and Google are some of the biggest names in UI/UX having some of the most used interfaces in the world used by billions of people across different cultures and generations. As we expand our UI/UX capabilities, we found ourselves spending quite a lot of time in each company's documentation to better understand their philosophy and design decisions.

In the world of user interface (UI) design, the choice between rounded curves and sharp edges has long been a topic of discussion. Two of the most prominent players in the tech world, Apple and Google, have employed contrasting philosophies in their design languages—with Apple embracing soft, rounded curves and Google opting for sharper edges through its Material Design. These choices reflect not just aesthetic preferences but also have a profound impact on user perception and adoption.

Curves in Apple’s Design Language: A Friendly Approach

Apple’s design ethos has always centered around creating emotionally resonant products. The company’s heavy use of rounded corners and curves in its UI design is a key part of this strategy. Research in design psychology suggests that humans tend to associate curves with friendliness, safety, and approachability. This preference for curves stems from our evolutionary tendency to avoid sharp objects, which are subconsciously perceived as threats.

Google’s Material Design: Precision and Efficiency

Google, on the other hand, has built its Material Design philosophy on the principles of geometry, depth, and movement. Material Design employs sharper edges, bold colors, and consistent grids to convey clarity and precision. While it offers a clean and professional look, the reliance on edges and structured layouts often communicates a sense of efficiency and functionality over approachability.

Curves vs. Edges: Impact on Adoption Rates

The contrasting design philosophies of Apple and Google have influenced user adoption in subtle but meaningful ways. Apple’s rounded UI elements create a sense of ease and emotional connection, making its products particularly appealing to a broad audience, including less tech-savvy users. This friendliness likely contributed to the rapid adoption of iPhones and the iOS ecosystem, especially during its early years.

The Evolution of Design Preferences

It is worth noting that both companies have subtly borrowed elements from each other’s playbooks over time. Google has incorporated more rounded elements into recent iterations of Material Design, reflecting an acknowledgment of the appeal of softer visuals. Similarly, Apple has not shied away from incorporating aspects of depth and layering—hallmarks of Material Design—to add richness to its interfaces.

Conclusion

The debate between curves and edges in UI design highlights how aesthetic choices can shape user perception and adoption. Apple’s rounded curves evoke friendliness and emotional engagement, contributing to the rapid acceptance of its products. In contrast, Google’s Material Design emphasizes clarity and efficiency, appealing to users who value structure and productivity. Both approaches have their strengths, but the preference for one over the other often comes down to the emotional and functional needs of the user.