Now, the gold standard for scantool functionality is Toyota Techstream, a PC based system used by the dealers to do whatever is needed.
So I figured why not try a few out on my 2006 Gen2 and report. Sometimes I give what advice I can, but realized that I don't really know what some of these apps can do. Maybe they have "XYZ" handheld scan device, or "ABC" app with a Bluetooth adapter. Time and again on the forums I see posts concerning members "scanning" their car and getting some codes, or incorrect codes, or no codes.