CCT and duv testing

What meter is everyone using to determine CCT and tint? I have downloaded a couple of apps that work ok based on the manufacturers claims of CCT so the apps are in the ball park. I also would like to check the duv of a couple lights and add some minus green so it would be helpful for that as well. I’m not that interested in lux/candela/lumens.
I’ve done several searches here and on Reddit but either an affordable option doesn’t exist or I have been unable to find one.
The Opple LM4 seems a little too much work from what I’ve seen but just seeing what was out there.
The Lightspectrum EVO pro app seems ok but the duv is in a different unit from what I see here all the time so it’s a little confusing.
Thank you for your help.