Laevo is Latin for "Boost", and the Laevo app is a remote control for the LEGO Boost hub.
Programming LEGO Boost using LEGOs official app is great fun for kids and adults alike, but debugging the mechanics of a new motorised construction can be difficult using it.
Laevo runs on your iPhone or iPad, connects to your Boost hub by Bluetooth, shows status of the peripherals (voltage, current, distance sensor, colour sensor, tilt sensor and motors), and allows you to drive the motors remotely whilst you tweak your latest creation. It doesnt time-out, and will stay connected until you choose to disconnect it.