أوقات و أماكن استجابة الدعاء is an Android application developed by Vanstudio Apps. This app is a free utility and tool that provides guidance on the manners and etiquette of invocation. The app also educates users on the conditions required for the invocation to be answered by Allah and the times and places where invocation is likely to be answered.

As a core practice of Islam, invocation is considered to be the most honorable act of worship, and it is the weapon of a believer. The app highlights the significance of invocation as a means of gaining blessings and warding off evils. It is based on the Quranic verse that says, "And when My servants ask you, [O Muhammad], concerning Me - indeed I am near. I respond to the invocation of the supplicant when he calls upon Me. So let them respond to Me [by obedience] and believe in Me that they may be [rightly] guided" (Quran 2:186).

This user-friendly app is accessible without an internet connection and provides valuable knowledge to those seeking to improve their prayer life.