This one is undated! I bought it and immediately am in love!
So the first page is a 12 month progress tracker, where you can put your measurements in for each month, and then the first month starts. You get a double page spread of the first month, and then there are five weeks of weekly spreads with a food layout with a spot for calories, exercise and water. After the month is up, there is a space to put progress photos and log how the month went, and then the next month beings. Not only are all the dates undated, you have spaces to put in what months you want. It's a bit expensive more me, but it was well worth the money, and I got the regular weekly planner too!