Cross-Platform
Cross-Platform
Software or technology that works the same way across different operating systems and devices
In Simple Terms
It's the ability for the same app to run on iPhone, Android, Windows, and Mac alike. Normally, you'd need to build separate programs for each OS — but with this approach, a single program can run across multiple operating systems. Because it operates by crossing over different OS foundations (platforms), that's where the name comes from.
Behind the Name
Cross (to intersect / to span) + Platform (foundation / environment). Put simply, it means running across multiple environments. You'll also hear it called multiplatform.
Take a Closer Look!
Cross-platform refers to the ability to run the same software across different operating systems (OS) and runtime environments — such as iOS, Android, Windows, and macOS.
Typically, each OS has its own programming conventions, so the standard approach is to develop apps using OS-specific methods. This is called "native development," but the challenge is that supporting more operating systems means building more separate programs — adding time and cost along the way.
That's where cross-platform development comes in. It's a widely used approach for building apps that work across multiple operating systems efficiently, allowing developers to share most of the codebase across platforms. Some platform-specific adjustments may still be needed, but overall it's far less work than building everything from scratch for each OS.
For developers, it means shorter development time and less to maintain. For users, it means access to the same features and design regardless of which device they use. Popular development tools include Flutter, React Native, and Unity.