Focus on Functionality Before Layout

When embarking on a new app design, many instinctively start by sketching out the layout—often beginning with the navigation bar. But this approach frequently leads to frustration.

Designing the interface shell too early—debating between a top nav or sidebar, deciding logo placement, or whether the content should stretch full-width—can be a trap. These decisions, made without context, lack purpose.

Flight booking design

❌ Bad Example: Designing the layout too early

The truth is, an application is defined by what it does—not how it’s wrapped. Until you’ve built out a few core features, you’re flying blind when it comes to structuring navigation or layout.

A better starting point is to focus on a single, functional piece of the product.

Let's say you're designing a platform for booking flights. Instead of wireframing the homepage or sidebar, begin with the core search feature. What does a user actually need?

• Input for departure location
• Input for arrival destination
• Departure date selection

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