Hi @ebedding,
Thanks for posting us..!!
Yes, the free version of our plugin tracks simple products at the product details page.
And we have not yet planned to include the functionality for variable product support in the upcoming version. But whenever we include the support for the variable product type, we would post about it.
Also, we would like to mention that due to WordPress forum policies we cannot write about the solution we have in another variant of our plugin, which supports Variable Product type.
We hope this helps.
Regards,
Tatvic Analytics.