IANAL or anything but the TOS states: "Methods of Access The Wolfram|Alpha service may be used only by a human being using a conventional web browser to manual

IANAL or anything but the TOS states: "Methods of Access The Wolfram|Alpha service may be used only by a human being using a conventional web browser to manually enter queries one at a time. Because Wolfram|Alpha is doing computation, not just lookup, each query may require significant CPU time on multiple parallel servers. Any attempt to use a robot, script, or organized group of humans to repeatedly access Wolfram|Alpha could place an unacceptable load on the system, and is strictly forbidden." So isn't it clear that they only want you to access their content by manually typing in a query ? Your app sends a query request to their server which is probably a violation because it could be counted as a "script", may be ?