SC+ Drumming(free) for Android
Create a random series of accented and unaccented singles/doubles, or customize with your own sticking patterns, odd time signatures(5/8, 6/8, 7/8, 4/4), and rhythmic subdivisions(sixteenths, quintuplets, sixteenth note triplets, septuplets).
Listen to, save, email/print the exercise(s).
The default version of the exercise will be 'random' singles/doubles. You can enter your own sticking patterns that will be randomly placed within the composition, and also setup any subdivision and/or time signature sequences.
The sounds aren't great as they are using general midi. Practice by playing along with the app, or with the metronome of your choosing. Improve your drumming vocabulary with quintuplets and septuplets.
In-app purchase options are available to permanently extend the length of the composition to: 4,8,12,16, and 20 measures.