Just a comment about the icon, haven't used app. For those who can't figure it out, the image in the icon represents a 3.5 inch floppy disk. If you don't know what that is, Google it. I'm in my mid fifties; haven't used a 3.5 inch floppy in more than 5 years, and in the last 10 years, can probably count on one hand the times I've used a floppy.
When I saw the icon, at first it did not even register with me what the picture was representing, had to actually think it through. People younger than 30 likely would have no clue what that icon represents, MIGHT have seen pictures of a floppy, majority may not have ever even held one in their hand.
Just my two cents, but message to the developer, perception matters. You may want to rethink the value of associating your app with such old technology. Alot of people are going to look at the icon and just pass the app by because their immediate impression is this must be an app that has to do with something 'old'. this is comparable to using a picture of a rotary dial desk phone, a typewrier, or a pay phone booth.