Realistically, I'd keep the first message short and specific rather than read the last few pages of a thread before asking, since otherwise you end up judging it on a bad day. How does the imlive mobile app compare to the desktop version — seems like a simple question but I keep getting mixed answers depending on where I look.
If you are only browsing free options, test two platforms at once — that is the part that actually moves the needle. In my experience, the matching algorithm is the thing that decides it, even if apps with a strict photo policy rarely say so.