Surah Muzammil is an Android app developed by Quran-Online, designed for those who want to learn and read the Quran. This app provides a comprehensive platform to learn Surah Al-Muzammil, the 73rd chapter of the Holy Quran. The app allows you to listen to the recitation of Surah Muzammil by popular Quran reciters, including Mishary Rashid Alafasy, Abdul Rahman Al-Sudais, Saud Al-Shuraim, and Maher Al Mueaqly. You can also read the Surah in 4 different Arabic fonts and with translations in multiple languages such as English, Urdu, Hindi, Indonesian, Malay, Spanish, and more.

The app also includes features like bookmarking, a notification setting for daily reading, and a transliteration feature in English for those who cannot read Arabic. The app also offers the option to download Surah Muzammil offline and remove ads by upgrading to the premium version. Overall, Surah Muzammil is an excellent app for those looking to learn and understand the Quran better.