DevExpress Chart Control is a native iOS library for Xcode projects that use either Objective C or Swift. For those preferring Visual Studio development, Xamarin.iOS wrappers are also available from DevExpress.

DevExpress Chart Control's key features:
- Xcode development in Objective C or Swift
- Xamarin assemblies for Visual Studio development in C# or VB.NET

- Hardware GPU acceleration for fast chart rendering
- Support of large data sources (5-20 millions of points depending on the target device)
- Optimized for visualizing data updates in real time

- Zooming and scrolling operations
- Series and point selection
- Exploded points support for Pie and Doughnut charts
- Customizable appearance for all chart elements
- Settings for modifying behavior and layout of Axes, Legends and Series Point Labels
- Hassle-free data initialization for all frequently used types, including DateTime, Numeric, Qualitative and Financial (Open, Close, High, Low)