I have use this app for one month . After the more recent updates, it has been nothing but errors, ads and popups . if the app still functioned I could understand .But now there are errors on the QR scanner, the http link is broken, the key method is a pro only feature, and being on the same WIFI appears to do nothing . it is now effectively unusable . and I was not able to get one file, doc or app to transfer from one android phone to other .