I agree with JOELGLAINE that the app is not important. Like I once read "you don't need to be a chicken to know if an egg is good". LOL

Of course, if the one writing the critique doesn't know a tool, he won't be able to make concrete suggestions on which dial to tweak or which setting to change. But the artist will know what to do, if the critique is specific enough.

By the way, I would like to thank all that had the time to check out my last pic. That was VERY useful, specially because that specific pic was of a new "style" for me. I learned a lot today! Much more than I would by just reading the usual "excellent!", "awesome!", "very good!"...