A free program for Android, by Lyfta Workout Tracker.

Lyfta: Gym Workout Tracker Log is an application that allows you to track your gym workouts in an organized way. The application is very intuitive and easy to use, so even if you have no prior experience with fitness and bodybuilding, you will be able to use it effectively.

This is how it works:

When you start the application, it will ask you to enter your personal information. It will also ask you to enter the number of sets, reps, and weight you performed in each set. After that, it will give you an overview of the workout, and it will also give you the details of each set.