Hi Eliza -

Personally, I like My Fitness Pal. You can load the app to your phone but I found to get set up, use your laptop/PC; it's much easier and the 2 will sync automatically.

It's been a while since I set it up but I don't recall it being difficult. There is a main area where you can set goals..not only weight goals, but cal/carb/fat and maybe some other things. Just wander around a bit - I'm sure you'll figure it out.

There is also a tracker on this site but I've not even looked at it though there are a number of members who use it.

Hope this help -
Deanna