Prayer Sensor is a free Android app developed by Hazem Ourari that helps the user to accurately calculate the number of rak'ahs during prayer. The app uses the proximity sensor of the phone to sense the movement of prostration and then calculates the number of prostrations to determine the exact number of rak'ahs.

The app is easy to use, all you need to do is place the phone in front of you while praying, and stick your nose to the edge of the front of the mobile moment of prostration. The app will then calculate the number of prostrations and thus fully rak'ah. It also comes with a feature that shuts down the screen completely to allow for maximum concentration during prayer.

Additionally, Prayer Sensor offers a smart carpet solution that helps the user to avoid mistakes in calculating the number of rak'ahs. By placing the phone on the rug, the sensor will detect the movement of each rak'ah and touch the brow of the worshiper to calculate the number of rak'ahs.

Overall, for those who want to ensure accurate rak'ah calculation and maximum concentration during prayer, Prayer Sensor is a smart solution that is worth trying.

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