Out of over 1.9 million students in the 2018 ACT-tested graduating class, 44% took the full ACT® test at least twice in hopes of improving their scores. Camara and Allen (2017) support this practice, confirming that factors such as time in the classroom between test administrations are associated with increases in ACT Composite scores from the first to second testing. Obvious benefits of increased scores include improved chances of meeting college admission and merit-based scholarship criteria (Doyle, 2006). Given motivation for and potential benefits of retesting with the ACT, an important question centers on the likelihood of students improving their Composite score between the first and second test. This paper and its associated web application are intended to provide student-specific information that assists students, families, counselors, and educators in deciding whether a student's chances of increasing his/her Composite score warrants taking the full ACT test for a second time.