Best free patio design apps or website

Hi!

We are new home owners and are DIYing a lot of our home projects. Currently we are working on our backyard and have a red stamped concrete patio, and then large concrete pavers the go out into a small yard toward raised garden beds. We want to build another small patio out by the garden beds but are having trouble visualizing what makes sense, on a budget lol.

Any suggestions on a design app we can use to visualize concepts? Or suggestions if you think a matching red paved patio would make sense or regular concrete patio?