The Google data-saving app seems to be taken away from the Google Play Store. Although, its been two years since Google launched Datally. An Android app (Datally) if you have installed on your phone, you can continue to use it, but the app is no longer available for download over the Google Play Store.
Datally is an Android app that lets users save mobile-data by blocking background data and unwanted app notifications. Datally is aimed at smartphones users to prevent hard data limit on cell plan form reaching a data cap.
The users who were not able to afford to consume too much mobile data. The app takes advantage of a VPN to automatically check data usage of each app installed on the phone and lets users block background data usage. Means users were able to keep all data within the smartphone.
Alongside, Datally also includes more than just other basic features such as the ability to save a small allowance of usage in emergencies cases.