Sebi does it seem to be more metal detector proof than the M-10. I have a bunch of Tascam DR-2D's and like the recorder but if the mic pre-amp is any good this may be the recorder to run with a babynbox for extreme security shows. The ios app does me no good since I am an apple is food / android user.
I have no means to properly test that, but the A10 feels way lighter and less metal than both the M10 and DR-2d (comparable to the remote of my Samsung TV).
I do have a hyper sensitive metal detector at home that I use on walls before drilling holes in them to make sure there are no pipes or wires. Both the M10 and A10 get picked up by it, but so are the rivets on my jeans.
However, since no venues around here have MDs I can't really test it in a real world scenario. There are two big venues in Berlin that have MDs now, but I almost never ever tape there because usually the same shows come to Munich or Zurich (both way closer to me).
There is an Android app, too. And judging from the screenshots on the Google Play store, it looks identical to the iOS one.