I have tried tooltip pods like AmToolTip and EasyToolTip(that can point to navigation items) but I need toolTip that covers the whole screen with a blur overlay and highlights a particular view in navigation bar ie. navigation item. For example The overlay option of this android library Simple Tool Tip Demo does exactly what I want Thanks.
You could use Instructions in iOS. It allows you to add customizable coach marks into your iOS project. Available for both iPhone and iPad. You can also customize its properties.
You can also refer this link for more similar libraries in both Swift and Objective C.
