This paper seeks to determine whether or not mindfulness meditation training via a simple meditation app can effectively improve well-being among graduate students enrolled in STEM programs. Graduate students were recruited from STEM programs at the University of Florida. Participants were randomly assigned into treatment and control groups. The control group simply proceeded as they normally would during an academic semester. The treatment group received free access to the Ten Percent Happier app and were asked to meditate once per day for eight weeks. Both groups completed pre-, mid-, and post-intervention surveys that included the Center for Epidemiological Depression Scale (CES-D) and the Generalized Anxiety Disorder 7-Item Scale (GAD-7). The treatment group averaged about 10 minutes of meditation per day, and the average participant meditated on about 82% of days within the intervention period. At the end of the 8-week intervention, the treatment group reported CES-D and GAD-7 scores that were about 35% and 41% lower than the control group and their physical symptom score was about 36% lower. Relative to their own starting scores, CES-D, GAD-7, and physical symptom scores decreased 35%, 50%, and 43%, respectively for the treatment group, while the control group experienced no change in scores.