I encourage you to use the official app of the Jehovah's Witnesses (search for JW Library).

This NWT based bible app uses auto complete and smart chapter entry to quickly locate and display a scripture, which is different then the commonly used method of tapping on book name and chapter number. It's a very small app, fast and uses a single epub file downloaded from jw.org, nothing else is downloaded or saved in your device.

All content is based/streamed from jw.org web site but this is NOT an official application of the Jehovah's Witnesses.