i use gymrat on my droid. i like it because its easy to add exercises that arnt in the database. and you can create your whole routine for easy tracking. i also have fivethreeone on droid. havnt gotten to use it yet, just throwing it out there. suposed to setup your 5/3/1 routine for the whole month once you put in your 1rm in bench, squat, dl, and ohp.
i used to use mynetdiary for macro tracking, but i do that in my head now