A free program for Android, by Pion Tech.

In a world where our phones have become the most important tools, it is vital for us to have a way to get notified when there are incoming calls or messages. 

The problem is that most of the time, we can't hear the ringtone because the phone is in silent mode or because we are in a noisy environment. So we end up missing important calls and messages.

With the Flash Alert On Call, SMS Plus app, you can get a flash notification that will alert you to incoming calls and messages. You will be able to hear the notification through the sound of the phone. You can even set the notification to go off in a specific sound or vibration.

So if you are in a noisy environment or have your phone in silent mode, you will be able to get notified of any incoming calls or messages.