The question is: How fast can you paradiddle? A paradiddle is a small pattern of strokes executed with the right and the left hand. Paradiddler lets you play a lot of different paradiddles and measures how fast you are, so you can compete with your friends online. Paradiddler is not only made for drummers. It is fun to play for everyone and all ages! But be careful: Paradiddler is very addictive!