Now I've been using my fitness pal to keep a track of my weight and how far I've got to go
However I've just downloaded an app called monitor my weight and it's great- you put in your start and goals weight and can add any more in the middle so I put my current weight in and the date I want to be there by- it gives you the % you are towards that loss the % of how far you are towards the goal date (if you have one)
How much you've lost
How mcuh you need to lose each week of average etc
People probably already use it but for those that don't I would highly recommend!!