500 fonts for galaxy is an app that uses root permissions to install and change a phone's font to a custom one.....you see, if you want to change ur phone's font,2 things you have to consider is the custom font's size(KB) and its size(how huge or small it is).......fonts with small size in kb and normal size are best for android phones but if you install a very large or large font,IT WILL BRICK YOUR PHONE...this app provides you with a big collection of very beautiful font but does not shows you their sizes....this app has bricked my phone for good 4(FOUR) consecutive times...the first time it bricked my phone,I took it to a phone engineer who unbricked it for me but the 2nd,3rd and 4th time I had custom recovery and a backup installed and was a able to unbrick it my self.....what I am trying to say is that if you must use the app,make sure you have a nandroid backup but if you don't know how to do the backup,use anyother app that displays the font size eg ifont. PEACE