I use the Ultimate Weight Watcher diary for android. I think it was in the $5 range. It features "extra boost" which makes the plan act like the old plan instead of PointsPlus. Basically, it calculates your points as usual and then subtracts a certain amount of points to allow for "zero point" items like fruit and veggies.
It also has a weight and measurement function to track inches and weight lost...and you can set goals and see how many weeks you are from hitting your goal based on past weight loss. I couldn't recommend this app more!