Studies have shown that counting calories can be an especially effective part of a plan to lose weight. Here are my three favorite favorite apps to keep track of what you eat. MyFitness Pal has developed the Calorie Counter & Diet Tracker app, a popular choice among the health-conscious. The app claims a database of 5 million foods and it even remembers your favorites. It works with other apps and devices such as Apple Health and Fitbit and counts your daily steps. It’s free for iOS and Android with premium services available for purchase. Lose It creates a personalized weight loss plan based on how much you hope to lose. The…