The reason you have to select reps/weight in the end of each exercise is because I felt that the benefits you get of the shake control is removed if I still have to write in stuff... Well it is not a huge project to edit it so if more people want it that way I guess it can be fixed.

About not being able to change the name is a bit of laziness from my side. It is coming before Wednesday.
I have not made an option to clear the history but I will upload a new version with a context menu to remove an exercise in the history and so now the phone unlocks on the last set.

I do not really know how to implement super-setting really... I think it will be a huge amount of work :P

The diet part of the program is not really completed, I'll consider what you said when finishing it! I am about to add some history for the weight and the diet, just do not know how it should be implemented.