What is the best app so that I can keep on getting alerted about a notification

[AC Question]

Hello,

I have an android and am on call. What is the best app that I could use for being notified constantly until I acknowledge it.

I am worried about sleeping through a notification when I am on call.

Any app ideas would be great.

thanks,

 

[B. Diddy]

Welcome to Android Central! Which phone? Some phones have this built-in, in the Settings>Accessibility menu, under Notification Reminder.