I've had a really good idea for an app that I want to create but I am totally new to this. Sorry that I am going to be fairly vague but just need some help. Basically (without giving away to much) I want my app to notify the user when something happens in there chosen subject(s). But, how would I have my app update this? Because the idea I have in mind would be quite alot of information and constantly updating? So how would the updates get to the user? So for example a website has all the information I need, and that gets updated, so as that updates how would I update my app? I hope I make sense!