Al-Kamus is a free dictionary app developed by Ustad Firanda Andirja Official for Android users. This app is a combination of al-Munawwir's dictionary and المعجم الوسيط, which provides Arabic-Indonesian and Indonesian-Arabic translations.

The dictionary is very comprehensive and includes a large number of words and phrases, making it an excellent resource for anyone learning Arabic or Indonesian. The app is user-friendly and easy to navigate, with a simple interface that allows you to quickly search for the word you need.

Overall, Al-Kamus is an excellent tool for Arabic observers and anyone who needs to translate between Arabic and Indonesian. It is a must-have app for anyone who wants to learn more about the Arabic language and culture.