Design patterns are reusable solutions to design problems. Take a subscription form, for example. The problem presented is allowing users to sign up for a subscription. The most widely accepted design pattern is creating a form with an input for an email address and a submit button. Some designers build on that pattern by adding additional inputs, but the basic structure remains the same.

Patterns are found throughout digital design, aiding in usability. Users recognize the most common patterns and know how to use those functions intuitively. This makes your UI more user-friendly and easier to use.

There are also platform-specific patterns that make iOS or Android applications consistent and more recognizable.