QPLCR appears to be an open source Chinese adaptation of a Russian LCR tweezers project ...
Now for the QPLINK - I think it is a Chinese version of the newer Russian nRCL project...
So lot of question marks still, but it's at least something 
Absolutely right. There are no specifics yet to make a comparison....
In particular, there is nothing about the tweezers
QPLINK LCR-1S yet - no manual, no firmware, no manufacturer.
Why this is so is absolutely unclear. Why is it always a secret and no-name on Aliexpress???