Teknologi Quran International is a startup company that runs on the education of Islam religion especially in Al-Qur'an recitation. Since this company was founded in 2015, there has been no significant profit from applications that can sponsor the operational cost of the company. This then led to the unfocused development of the Learn Quran Tajwid application because most of the employees now have other external projects outside the company. Therefore, the evaluation of the business model is provided to suggest the monetization model so that the company can gain more profit on its side. The challenged-based learning (CBL) methodology is conducted through qualitative data collection with contextual interviews in order to assess the learning theory which has been implemented and finding the perfect in-App purchasing as well as an organic marketing technique that wants to be implemented in the future. The application that is examined by 20 most convenient user samples and stakeholder's recommended domain or subject expert, is available on both platforms, Android, and iOS. The evaluation results show that the monetization model of Learn Quran Tajwid needs to be improved completely since right now there are so many possibilities from the active users who have an opportunity to be taken advantage of by the company. This research can also give benefits to a startup company that wants to have a combination of more sustainable monetization models.