Resize text bassed on screen resolution

first, sorry for bad english

Im making a GUI for my 2d game, but i want to target to all ios devices, so, ther is 4 screen resolutions 2 small and 2 really big. Recently, i notice mi text get very small in the largest resolutions.

There is a easy way to get te text scaled for maintain their size? or i need to code for every screen?

thanks in advance

Wolfram Kresse gave a good explanation of GuiText in this answer:

It can be configured to scale automatically for different screens - so there should be no need to code for different resolutions if you use GuiText.