Desktop software such as MindManager and FreeMind allows you to easily draw Mind Maps. But their interface rely on much keyboard shortcuts that doesn't work (well) on Android virtual keyboard. Is there a way to draw such mind maps seamlessly with touch screen only?
I've been using the app Thinking Space. Certainly not as efficient but good if i want to map a quick idea out.
Try mind map memo. Easy to add new branches with a simple swipe but not as powerful as Thinking Space.