Moodjam is an online diary that allows people to express their moods and feelings using patterns of color. It has visualizations of your moods and other people's moods. Use MoodJam to:

  • Keep a record of your moods every hour, day, and weeks—as often as you want, for as long as you want.
  • Visualize your moods in beautiful color strips.
  • Learn about trends in your moods and colors you associate with specific moods.
  • Share your moods with friends, family, co-workers, and other people who matter to you.

Number of Colors

When you start using MoodJam, you can only choose one color with your mood. However, you can increase the number of colors you can choose by posting more moods. Below is a table of how many moods you have to record to gain a particular number of colors.

# of recorded moods 0 1 3 7 15 31
# of colors 1 2 3 4 5 6


In early 2006, a bunch of HCII Ph.D. students and I discussed ideas for mood-sharing projects. The discussions were interesting, but we did not implement any of the ideas. Several months later, I visited the MIT Media Lab's web site. I really liked the colors at the top of the site. I thought what if you record moods using colors? In October 2006, I released MoodJam.

In early 2007, Google promoted their Google Gadgets API by running a contest. I created a Google Gadget called My MoodJam. My MoodJam received two Google Gadget Awards: (1) the Prettiest gadget and (2) the Gadget most likely to get you a date.

In 2008, MoodJam received a Smiley Award Honorable Mention.

A couple of years passed and I stopped working on MoodJam because I was finishing my Ph.D. dissertation.

In 2011, I attended Quantified Self Europe Conference in Amsterdam. During one of the conference breakfasts, I met Laurie Frick who makes wonderful art with self-tracking data. She told me about a new project that she was working on with colorful laminated tiles. She said the project was inspired by a website called MoodJam. Surprised and excited that I would meet a MoodJam user thousands of miles from my home town, I exclaimed "I made MoodJam." Inspired by this chance meeting, I prepared a new version of MoodJam, which I released on January 1, 2012.


The layout is built on top of Twitter Bootstrap. The front-end is written in Javascript using jQuery and Underscore.js. The back-end was written in Ruby on Rails. The icon for Color your mood on the top bar is by P.J. Onori.



@moodjam on Twitter