This study aimed to discover the average difference in Assemblr Edu augmented reality students' learning results in developing vocabulary mastery. The subjects of this research were 25 students from grade 11 of SMA Negeri Jatinangor in the academic year 2023/2024. This research used the quantitative approach with a pre-experimental design. The instruments were a vocabulary test in the pretest and posttest to measure students’ achievement in the learning process during treatments. The hypothesis was tested using a non-parametric statistic test with the Wilcoxon test. The test showed that the average student score in the pretest was 46.44 and the average score in the posttest was 72.16. The results show the posttest score was higher than the pretest score. It indicated that there was a significant difference in the student's vocabulary mastery at the pretest and posttest. Other than that, the value of N-Gains in both the pre-test and post-test showed 0.30 is categorized as moderate. In addition, the Wilcoxon statistic test results showed that the Sig. two-tailed (0.000) is smaller than (0.05). Based on the test results, the researchers concluded that the use of Assemblr Edu augmented reality media was proven to be effective in developing students’ vocabulary comprehension.