Datally is one of the latest "made by Google" apps for all smartphones and tablets with Android 5.0 or newer.
Essentially, Datally is an application able to analyze real-time data usage on mobile, helping the user to optimize their mobile data consumption. This is done by blocking some applications that unload data (doing data traffic) in background or undue traffic that is not in the user's interest.
The application is very useful for those who have mobile internet subscriptions with traffic 3G/4G limited.
WithDatally, the user may impose limitations on data usage in some applications, may set notifications to reach a limit on traffic consumed, or choose to be notified by the application when a Wi-Fi network is available nearby. The Wi-Fi Identification Function is called "Wi-Fi Finder," and an interesting feature is that a detected wireless network can be evaluated by users who have been connected to it. So the new user will know if there is a network with a stable internet connection. Reviews of a Wi-Fi network in the mall or airport will also be available through the app, and they will be based on your Google / Gmail account.