The current research aims to explore the effects of mobile applications (apps.) on English lexis learning. This paper explored the interests of learners in mobile apps., especially in the English vocabulary learning process, and investigated the efficacy of mobile apps in their academic environment. It also observes that Interactive use of technology is showing effectiveness in the performances of the learners. This study adopted a quantitative approach, using a questionnaire that consists of 20 items. 150 students from the English department of National University of Modern Languages (NUML) contributed to this study who were regular users of mobile phones and apps. The data was analyzed by the SPSS program through frequency and mean deviation. The study concludes that it becomes easier for the students to learn vocabulary proficiently when vocabulary is accessible in numerous ways such as Pictures, Definition, Sound, etc. Findings also showed that it is easier for the participants, to learn vocabulary by apps, because it provides them visuals which leave a long lasting impact on their memory. Investigation also proved that the majority of the participants considered learning vocabulary through mobile app an enjoyable experience.