This app is designed to manage physical books. Scan books' Barcode and books will add to Bookshelf. You can record book information reading status notes labels and etc. With Search function there is no need for you to rummage through your house for a book and you may avoid to buy a same book you have.
This app is fully open source under GPL v3 license you can find source code here:https://github.com/smartjinyu/MyBookshelf

Recommendation by ifanr: http://www.ifanr.com/app/798137

Features:
- Material Design
- Specially designed for book management no redundant functions
- Fully Open Source no privacy issues
- Support Single Batch Manual add books
- Get book details from web services automatically*
- Support Export to .csv file
- Perfect Labels and bookshelf system
- Support data backup and restore
- No ADs

*Only support Douban.com and OpenLibrary.org currently more services will be added in the near future