How can I find and remove the mysterious pink app on my iPad?

I have an odd (never seen before pink app on my page after I sign in an open my iPad) It’s stuck there , I cannot find this on my apps page any where it has two reverse symbols on each side of a line with a play arrow when I tap it the box shrinks to the top of the screen , then has a flashing microphone symbol with nothing else as Roth time runs out of the play mode, what is this and how do I get rid of it!

[Re-Titled By Moderator]