The emergence of Computer-Assisted Language Learning (CALL) and Mobile-Assisted Language Learning (MALL) has opened doors to more personalized learning environments and encouraged language learners to take charge of their own development of communicative competence. This study aimed to examine how a personalized listening app (iListen) affected the development of listening comprehension and awareness of listening strategies among basic language learners. The study involved 40 Iraqi high school EFL students, divided equally into experimental and control groups. The participants' initial listening comprehension level was assessed using the listening section of the A2 Key English Test (KET) before the study. A personalized listening app was designed by software technician, offering branching paths based on learners' listening strategy awareness. This app served as supplementary self-study material to support the listening course in the experimental group. The results of independent sample t-test indicated that the experimental group outperformed the control group significantly in overall post-test scores. Additionally, the results revealed that the experimental group demonstrated significantly higher awareness of listening strategies at the end of the experiment compared to the control group. These findings demonstrate how learner-centered instructional materials, especially for basic language learners, can be developed and integrated into listening instruction by educational authorities and language teachers.