What is the stable or highly used stable ArcGIS SDK version For Swift or IOS.
package : https://github.com/Esri/arcgis-maps-sdk-swift
Version 200.4 is the current stable release (Release 200.4.0 Release · Esri/arcgis-maps-sdk-swift · GitHub).
For more information see ArcGIS Maps SDK for Swift | ArcGIS Developers.