So you are looking for a smart color meter and light to go with your smartphone? The Lumu Power Light, Flash, and Color Meter has you covered. It is powered by your iOS device and has a measuring range of -4 to 20 EV (temperature range of 1500-20,000K and illuminance range of 0.15-250,000 lux).
The device connects to your smartphone via its Lightning port. It has a super compact design and has a convenient mobile app.