This was done for my wife who just wanted to record her weight when slimming, which is nearly every month or week, depending if the dress she wants to wear fits or not 
It starts off with a simple config screen where the user enters standard stuff, name, age, height, starting weight, and target weight, all measurements are in imperial but should be easier enough to convert to metric. You are then taken to the Main overview screen which shows starting, target, and last weight. it works out the person's BMI, and informs them whether they're obese, overweight, healthy, etc. A chart is provided showing the entries from the Daily Weigh In's screen.
Also just done a daily meal planner so she can plan her meals ahead.
The source code is there if you want to change it in any way but please update any enhancements you feel benefit this simple program, and my wife
It starts off with a simple config screen where the user enters standard stuff, name, age, height, starting weight, and target weight, all measurements are in imperial but should be easier enough to convert to metric. You are then taken to the Main overview screen which shows starting, target, and last weight. it works out the person's BMI, and informs them whether they're obese, overweight, healthy, etc. A chart is provided showing the entries from the Daily Weigh In's screen.
Also just done a daily meal planner so she can plan her meals ahead.
The source code is there if you want to change it in any way but please update any enhancements you feel benefit this simple program, and my wife
