Sizes
A Swift library for iOS developers to preview apps across multiple device sizes, orientations, and font combinations.
What is Sizes?
Sizes is a Swift library for iOS that allows developers to preview their app's UI across different device sizes, orientations, and font combinations. It solves the problem of manually testing layouts on multiple simulators, which is time-consuming and error-prone.
iOS developers who use Auto Layout and Dynamic Type, particularly those working on apps that need to support multiple device sizes and accessibility font scaling.
Developers choose Sizes because it provides a quick, integrated way to validate UI changes across many configurations without leaving the app, reducing testing time and preventing layout bugs before shipping.
Overview
View your app on different device and font sizes
Use Cases
Best For
- Testing iOS app layouts across iPhone and iPad screen sizes
- Validating UI responsiveness when switching between portrait and landscape orientations
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