There are plenty of app controlled LED lights on the market these days. Not all of them are flexible though. The Twinkly Flex is a flexible and shapeable LED light tube that you can control with WiFi and Bluetooth. It works with iOS and Android devices. You get dozens of customizable effects but can always create your own.
This flexible LED light is also compatible with Google Assistant, Alexa, and Apple HomeKit. You can link it with other Twinkly devices for more complex scenes. This rope light measures 6.5ft and can be shaped any way you like. It ships with a smart controller and mounting clips.[where to find it]