The antivirus report shows that the app is completely safe for usage. Google Inc. is the developer of Google Play Books which is included in the Books & Reference category. The tool is for users aged 14 and older, it was rated 3.9 on Google Play.
This application was downloaded and set up by over 1B users and the most recent stable release was on February 27, 2017. Samsung and Sony users install the app quite often. A free .apk file of Google Play Books 3.12.15 can be downloaded from Droid Informer and you can have a look at users' reviews on this site. Prepare 11 MB of free space on your device for this app setup package.
As users state, the app has some important benefits, they are the UI is awesome, a good price, great performance and automatic updates.