THE APP IS FREE.
THE ROUTER ISN'T (BUT IT'S CHEAP).

The optional Linno Wifi Router is necessary to control your lights with a smart device. Simply connect the router to any USB power source using the included cable. A single router can connect with one or multiple smart devices so numerous people can have their own remote control.
The Linno Router uses the Zigbee protocol for safe and secure communication with Linno lights.