The difference between a FinancialIndicator and a FinancialOverlay is small. Overlays are usually drawn against the same axes as the price, but they don't have to be. Overlays mostly display multiple values, but not all of them, and so so some indicators.
Requirements
Target Platforms: Android 4.4+, iOS 8+
Development Environments: Visual Studio 2015+, Visual Studio for Mac Preview, Xamarin for Visual Studio 4.2+