Spoilers Blocker is an application that allows you to do exactly as the name suggests: block 'spoilers' on your Android device. How? Very easy. Choose the topics you want to avoid and include as many keywords as possible to make sure that the app can successfully filter out possible spoilers. For example, if you don't want to see any 'Game of Thrones' spoiler, you could block a range of words, including Tyrion, Arya, Cersei, Stark, Westeros, Winterfell, and so on.
Once you have chosen all the themes and keywords that you want to block, you can then select the apps in which you want to block the content. So, when one of the keywords appears in a selected app, a coloured box warns you of the possible spoiler.
Spoilers Blocker is a very interesting application, which also offers a lot of customization options. You can choose the color of the 'spoiler' box, the size of the font, and even the style of the app itself.