MyFitnessPal - Track the number of calories that you consume each day with MyFitnessPal. The app also lets you create a diet and track the exercise that you complete each day whether it's walking, running or some other type of program.
WebPlotDigitizer - WebPlotDigitizer - Web based tool to extract numerical data from plots, images and maps.
Waistline - Free calorie counter and weight tracker
Engauge Digitizer - This open source, digitizing software converts an image file showing a graph or map, into numbers.
CalorieTracker.io - An intelligent calorie and weight tracking assistant that learns with you.
Plot Digitizer - All-in-One Tool to Extract Data from Graphs, Plots & Images