Its not bad once you learn what you need to learn – Illustail Review

Despite not being able to understand Japanese, I eventually managed to add danbooru.donmai as an image search option for this app. It wasn't hard to find and add it and eventually you will learn how to search for tags and save them for later by experimenting and clicking on various buttons. It does what I expected the app to do when searching for a tag and it displays them as thumbnails on a refreshable scrollable page as you would normally do on apps such as facebook and twitter. You can click on each thumbnail to view each one in its resolution, saving is easy to do if you already have some idea how to do it before on other apps that don't implement the force hold and save mechanic. Overall no problems whatsoever. Fantastic, wish I knew Japanese though.
Review by whitehusky on Illustail.