How to Show Tooltips in Gravity Form Fields
https://wpmonks.com/downloads/tooltips
Gravity form tooltips addon lets you show tooltips using WordPress customizer. It is very easy to use and you will get live preview of all changes. Tooltips addon comes has lot of features to make the tooltips look elegant on the forms. It has 9 different tooltip icons and 5 beautifully made themes to text. You can also set the animation style for appearance of tooltips and their position corresponding to icon.