Since Wahoo Smart Trainers broadcast speed and power (wattage) via ANT+, any ANT+ enabled bike computer (like a Garmin Edge) will be able to read data from your KICKR.
You can also control the resistance of your trainer using any ANT+ FE-C enabled head unit or computer.
If you don't have an ANT+ FE-C head unit to control the KICKR, it will default to Level Mode on Level 2 on a progressive power curve - the faster you go, the harder it gets.