According to the official website of the game Attack on Titan, you can use the application of your choice through the download site. The download is done immediately without any issues. However, it's a little bit hard to understand how to get the application as it comes free for use. What are the things that you need to do?
To know about this free service you can search for it in Google, and will be directed to its official site. The page will display all the details of the free download. Here you can choose one of the three options for the download of the application. You can choose from the free option of 100 MB, the two-minute download, or the free trial version. After that, you need to connect your Google account to the application, and continue with the download. After the final step, you will find the application on your SD card.
If you have purchased the book, you need to choose the option of the two-minute download, and you need to enter the Google account name and password after you got it from the download site. The option of the free trial version is also available from the official site. On this page, you can select the free trial version, and you will have the option to download the application. Now, the application is installed on your computer and you can use it immediately. The only thing that you need to do is to enjoy the great story that you can read from the pages of the app.