"The Beater" is a simple to use but powerful drum machine which lets you compose drum rhythms on your iPhone/touch. Select from the eight drum sounds -
"The Beater" allows up to 16 parts per track across the 8 tracks (one per drum sound).
Save your composition between sessions.
Play back between 60-200 beats per minute.
Enjoy! If it's popular, I'll be doing more updates to add more features.