Alerts for Reddit is a mobile app which allows you to receive phone notifications whenever there is breaking news on one of your favorite subreddits, or a new post from your favorite user.
For example, you could use it for /r/worldnews and /r/news so that you never miss a breaking news story. You could also use it for a smaller subreddit, so that you don't have to check it as often - just get a notification whenever a new post rises to the top!
Feel free to send comments or feedback to alerts.for.reddit @ gmail.com