I don't want to install it (because I don't know you, I don't trust you), and I have no idea what is going on. The description is vague, and the website you point to does not seem to have anything related to it.
Yeah, your concerns seems clear to me. Though, permissions that this app is requesting are pretty minimal and are requiring just an access to the bitcoin network and to the 8.8.8.8 DNS server.
Anyway, I'll probably make it more user-friendlier soon. Thanks for checking out the store page anyway.