Aceh Int. J. Sci. Technol., 10(3) 171-181 December, 2021 doi: 10.13170/10.3.23199 171 Personalized Al-Quran Memorization Testing System Using Group Decision Support System Rian Adam Rajagede 1,* , Yuanda Hanif Hisyam 1 , Muhammad Ichlasul Amal Yulianto 1 , Farid Amin Ridwanto 2 , Alfian Try Putranto 2 , Muhammad Rifqi Fatchurrahman Putra Danar 2 1 Department of Informatics, Universitas Islam Indonesia, Sleman, Indonesia; 2 BeHafizh, Yogyakarta, Indonesia; *Corresponding author email: rian.adam@uii.ac.id Received : October 26, 2021 Accepted : December 7, 2021 Online : December 30, 2021 Abstract – Memorizing Al-Quran is one of the most important acts of worship for Muslims. After memorizing some parts of the Al-Qur’an, the hafiz or Al-Qur’an’s memorizer is recommended to repeat or muraja’ah their memorization to strengthen it. This process is usually done in pairs by listening to each other’s memorization or testing by asking questions about Al-Quran. This study proposes a system that can help memorizers test their memorization independently without a partner. The system will perform a memorization test to support the user’s process of memorizing the Al-Quran. The system records and analyzes user data and uses it to personalize memorization testing from time to time. The system was made using the Group Decision Support System (GDSS) approach with the help of several Al-Quran memorizers as decision-makers. The GDSS algorithm used combines Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) and Weighted Geometric Mean to rank surahs based on provided user data. The evaluation was conducted with the help of human evaluators, and the evaluators showed 78% agreement with the system decision. Keywords: Al-Quran memorization test, Personalized Quiz, GDSS, TOPSIS. Introduction Al-Quran is the holy book of Muslims which consists of 114 surahs or chapters. Memorizing the Al-Quran is one of the most important acts of worship. In memorizing the Al-Qur’an, one of the stages is muraja’ah, which is repeating the memorization to strengthen. The method that is often used in Muslim-majority countries such as Indonesia and Malaysia is tasmi’. (Ariffin et al., 2013; Aziz et al., 2019; Nik Md Saiful Azizi et al., 2019; Mercellina et al., 2020). The tasmi’ method requires a partner. The partner’s task here can be to correct the reading, remind, or test the memorization. For example, when a memorizer of the Al-Qur’an has a partner who is good at reading, the partner can also help in correcting the tajweed of the recitation. A good partner will also support the memorization process by paying attention to the condition of the memorizer, understanding which surahs are difficult or have not been memorized. However, for some people, this is not easy. Daily busyness and geographical conditions make it difficult for someone to find a partner to memorize the Al-Quran. For example, the current pandemic condition that forces us to stay at home can be a barrier to finding a partner. Also, another common problem is finding the right schedule. Adjusting the schedule between the memorizer and his partner during daily activities can be quite difficult. Therefore, we need a system that can help the process of testing the memorization of the Al-Qur’an. Like a real human partner, the Al-Qur’an memorization testing system should pay close attention to user behavior. The system should be able to create a test scheme that depends on who is being tested (personalized). Several studies have been conducted to create a personalized test system in learning, sometimes called adaptive