DTTG yellow spot

Hello, I have a yellow dot next to the picture of DTTG on the Iphone. But this is only on the Iphone, not on the Ipad.
What does this mean and how does it go away?

It means you have a beta version installed.
The public release does not show this marker.

Tks for this.on Both iPad and iPhone i Use TestFlight. Does do any harm?