The Top Charts module displays the top-ranking apps for Apple’s and Google’s respective App Store platforms under its two features: App Store Rankings and Google Play Rankings.
This feature will allow you to follow the most updated trends. You can get a general understanding of what apps are on the Top Free/Paid/Grossing charts. App Store rankings are updated hourly. Google Play rankings are updated daily. The Google Play Overall category is updated with rankings beyond #200 the following day, and those rankings will be revised for up to seven days.
To check specific app's rankings in a longer time frame, Category Rankings within App Intelligence can give you more insights.