5 Best Smart Christmas Lights (2023): String Lights, Garlands, Outdoor Lights

I tested three different string lights designed to go on a Christmas tree, and Twinkly's were easily my favorite. They're beautiful and easy to set up, and the black cord blends in nicely into the tree (the cord also comes in green). The app's Gallery tab has tons of premade light combinations to choose from, and you can also make custom effects in the app. It lets you design a light pattern by using an existing pattern, drawing with your fingers, or even uploading a GIF. The arrangement of lights on the tree works best for gradient and stripe-style patterns though--I love how the candy cane stripe effect looks.