I've been using the LiveStrong app to track what I eat, and have dropped from 210 lbs to 195 from August 1 to October 13. I'm 6'2" and 51. You select how much you want to drop each week, enter your height, weight, and activity level. It gives you a recommended number of calories per day, and has a large database of foods already so you don't have to enter everything. Be advised that some of the foods have incorrect or out of date calorie counts, but if you pay attention it soon becomes very easy to track. You can also create your own meals, for example, I typically have a waffle with peanut butter, and some flavored creamer in my coffee each morning - so I set up a meal for that breakfast, and don't have to enter each item. The Livestrong site has some great forums to look through if you're new to this as I am.
Don't forget to drink plenty of water each day!
Also, I use Runkeeper to track my jogging. I like it a lot; another similar one is iMapMyRun. Runkeeper lets you select a playlist to listen to, and you can also choose Coaching, for example I set up the workouts from the Couch to 5K program (week 1, 5 minute brisk walk warmup, then run for 1 minute, brisk walk for 1.5 minutes, repeat 6 more times). The app will voice prompt you with "beep - next interval, 1 minute, Fast", etc. You can also turn on or off other voice prompts for distance, time, pace... Your workouts are logged and the GPS shows where you went, you can review and see your pace at different times. Recommend you turn off wifi when you're using it so the GPS is more accurate.
Good luck!
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Also the LiveStrong site itself is frequently updated with lots of articles on fitness, nutrition, weight loss, and more.
