The main features include Datally understand your data usage and recommend you how to save your data. You can even control your data by setting Data Saver on so that it will block the background data usage and one can track the real-time data usage.One can even block the data for a particular app which is consuming a lot of data.Datally app will also search for nearby Public Wifi networks and recommends you to connect.
Datally app is compatible with all devices running on Android 5.0 and above.Datally app was initially tested in the Philippines where people save as much as 30% of the data as per Google.
Here is the download link. https://goo.gl/frJxax