Workout Buddy for Android.
Simply for logging name of exercise, weight, and reps.
I replace each time I add reps or increase weight by simply scrolling to that exercise. A big plus is you can name the exercise yourself, for example if you use a cable pulldown that is numerical and doesnt indicate actual weight at a certain gym, and at another location(home, different gym etc),
you can name it accordingly. It has a few other functions but only other things I use is the memo (ex:reverse grip 210x8, or dropset to 40sX12)