I was wondering how do you guys tune your modular synth. Some systems have quite a lot of VCOs and tuning may take some time, do you tune them one by one? also, do you use something like a guitar tuner or a mobile app?

There seems to be some modules to help with the tuning, are they worth it? or is there any other way to automatically tune the VCOs? I'm not sure if you could just send the VCOs through quantizers and have them tuned with no effort.