And I am protestant, and I have no trouble at all with a device that aids in prayer. I believe that we make far too much of our differences (Catholic/Protestant) and that in the very essentials there is agreement. God is supreme. He sent His Son to earth. He lived a perfect life, and was crucified. He rose from the dead. And He hears our prayers. Christ will return at a time unknown to us, to redeem His church. Faith in the above, and a repentant heart, saves us from separation from God, which is Hell.
My 'device' is called a brain.