This police scanner app also comes with streaming music radio, airport tower control stations and live NOAA weather reports. This is a great app to have for hurricane/tornado season. The app is rated 4.5 stars with 2340 ratings.
The last time this app was on sale for $.99 was more than 2 years ago and it was only for a day. App price history: http://appshopper.com/news/5-0-radio-pro-police-music-fire-more
All other competing police scanner apps are $2.99.