Suggestion add "undo redo" feature in Acrylic Paint application

Components

Acrylic Paint is a Free Freedom app for Android that helps you share your imagination. apps where we can draw or paint anything and we can also paint with the back screen according to our own choice.

Proposal

my suggestion for this app the developer should add undo and redo feature.

Undo is a command to cancel a command that has been done before. The Undo command is used to undo some of the last commands you make. Redo is a way to repeat something that has been previously canceled. The redo command is the reverse of the Undo command, the redo command serves to return a canceled command using the Undo command

Mockups / Examples

Benefits

The benefit if this feature is added, the user can cancel the command that has been done before. And users can also repeat something that has been canceled before.

The conclusion is the Undo command is used when the application user wants to cancel the command that has been done before, while the redo command is used to cancel the Undo command. I'm sure if the feature in add will make the app users increase.