Team-based projects continue to be important for structuring work in many organizations, and employees are increasingly using mobile applications (apps) for peer evaluations as part of a performance appraisals process. Since a graduating student can expect to work in a team at some point in their career, exposure to class-related group projects is important. This study explored using a mobile application (app) called DevelapMe (DMe), which allowed for 273 business undergraduates in 54 teams to give and receive real-time peer-based feedback during a 5-week group project. Prior empirical research has shown that technology can improve the group development process, but such research has not used a mobile app. The general goal of this study was to investigate how receiving real-time feedback through a mobile app (DMe) can affect the team development process over time. Two online surveys, Time 1 (T1) and Time 2 (T2), were administered over a 5-week period. Results showed that two of the three team-level process outcomes, team trust and team commitment (but not team value-goal fit), significantly increased from T1 to T2. Results also showed that receiving T1 sender-based positive, but not negative, feedback scales had a significant impact on all three team-level process outcomes.