OnTrack Screenshots (image) Drexel University Share Print E-Mail Caption Smartphone app Screenshots (as seen by participants). The app was previously called DietAlert and was changed to OnTrack based on participant feedback. Credit Drexel University Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.