You could have downloaded Hdbook 2016.3.1 for Mac from our software library for free. The actual developer of this free Mac application is Warehouse Express Limited. The application is included in Design & Photo Tools.
From the developer:
Hdbook allows you to design photobooks without the need for an internet connection. With hdbook, you can take the photographs you really care about and turn them into a personalised, high-quality photo book. The app allows you to share your projects with your friends.
You may want to check out more software for Mac, such as Smith Chart for Mac, Movie2Shot or TVPaint Animation, which might be similar to Hdbook.