Happy Scale helps people who are losing weight to redefine their relationship with the scale. By using their daily weigh-in as a single data point in a moving average instead of a source of truth, you can see daily weight loss progress in the app even when your scale weight plateaus for a few days. Over time, you become desensitized to the horror of a bad weigh-in and can avoid discouragement during the tender moments of building your new lifestyle habits.

I created this iOS app because I would be devastated in the first few days of a diet when I hopped on the scale and saw a number that was higher than my starting weight. I went on to learn that there are many factors that can cause fluctuations of a few pounds in our weight from day to day (glycogen stores, water retention, food in the belly, etc.), and using a moving average is a convenient way to neutralize these factors.

I've been working on this as a nights and weekends project for a bit over 4 years. I have some big ideas for where I'd like to take it in the future, but I'd love to get your feedback on where it is today!