Abstract: While isometric drawing and orthographic projection are crucial for engineers and designers, traditional methods can be a hurdle. This study investigated whether the ISOTOP mobile app could improve students' technical drawing skills. The app aimed to bridge the gap between traditional and modern methods in making Isometric and Orthographic Projections, irrespective of their background or experience. The research suggests that engaging mobile applications can make technical drawing both more enjoyable and effective. The study employed a quasi-experimental design, specifically a single-group pretest-posttest approach to achieve this. Grade 10 students' initial technical competence in manual isometric and orthographic drawing was assessed. A sample object (photo) was presented to the group without using ISOTOP. Experts then evaluated the output using scoring rubrics. The intervention with the ISOTOP application was then introduced. The results, based on the scoring rubrics, indicated that students' technical competence improved significantly using ISOTOP compared to the traditional manual method. It showed a significant improvement, with average scores jumping from "Satisfactory" in the pre-test to "Excellent" in the post-test. This suggests that the ISOTOP application can effectively address skill gaps and enhance students' technical abilities in these areas. Additionally, the low standard deviation in the post-test scores indicates a consistent level of improvement across the participants. Therefore, these findings suggest that technology-aided learning with ISOTOP can be a highly effective method for enhancing students' skills in isometric and orthographic drawing. This approach can not only foster a deeper understanding of spatial relationships but also create a more engaging learning experience for students.

Keywords: ISOTOP, Technology, Isometric, Orthographic, Technical Competence, Drawing.

| DOI: 10.17148/IARJSET.2025.12130