If software is needlessly complex and tedious, almost no one is going to use it. This fundamental tenant of technology has been one of the biggest barriers for any kind of widespread embrace of calorie tracking. Researchers at MIT are looking to change things with a new voice-activated prototype for logging nutrition.
Really neat, but the issue I run into often is home cooked recipes. Diet trackers work great for pre-packaged processed foods, or single source foods (like apple) but haven’t got a clue when you go to recipes, especially if it’s your own recipe.