Dear Dr. Clarkson,

Thanks for your kind response.

So it is based on Voltage output, ST/SC signal ratio, and a 4PL model.

I don't access to such instruments, herein Iran.

But I try to develop a smartphone-based quantifying system for LFIA applications.

Dear Dr. John Clarkson

Thanks for your kindness.

There are some free platforms such as "GNSplex-master" but not for mobile phones.

I recently prepared a smart-phone based application and platform for my LFIA works.

It is not great but works well.

I am going to improve it during my future works.

I discussed the pros and cons of various readers in my recent Review paper.

" Article Recent Advancements in Structural Improvements of Lateral Fl...

6. Electronic readers for quantitative LFAs

Regards,

Tohid