YAKIN is an Android application developed by Crescent Digital Sdn Bhd. The app is designed to help users adopt a Muslim lifestyle in their daily lives. It aims to become the leading and most comprehensive Muslim lifestyle app in Malaysia. YAKIN provides a platform for users to access services offered by the Persatuan Pengguna Islam Malaysia (PPIM), such as complaint and donation features.

The name YAKIN is derived from the Arabic word "يقين‎," which means "certain." The app was named YAKIN to signify PPIM's commitment to protecting and upholding the rights of Malaysian citizens, especially Muslim users. The app's main features include prayer times, daily prayers, and supplications (doa) in Bahasa Malaysia. Other features include a donation platform, complaint center, and news updates related to Islam and Muslim culture.