Low resolution output is a fatal flaw
I can deal with the forced-square format, but will not let apps like this step on my hi-res images. 1.6mp output is a deal-killer. Updated: following the developer's response, I reinstalled the app on both an iPhone 6 and a New iPad. The Hi-resolution setting described is automatically enabled when installed, in fact the switch doesn't work, and can't be disabled. The output is 1.6mp as stated previously. I do have the developer's other app MonoVu and it delivers a 11.2mp output. There may be a bug in this one.