Classified Advert Search app

Hi, I require a Mobile Application (Android and Apple) to alert user when specified search items appear on gumtree (currently uk only). Application must be configurable so that user can : 1) Enter required search text e.g. "Audi A4" 2) Select Category they wish to search e.g. 3) Select either City or Geographical area they wish to search e.g. 4) Select frequency of search - either every 2, 4 or 8 hours Application must visibly / audibly alert user if any new items that match above criteria are found, the alert should lead to a display of newly found items which should hyperlink back to the original adverts on gumtree. Only new adverts should be alerted on i.e. if a new advert is found at 2pm and the search runs again at 4pm an alert should not be generated for the item that appeared at 2pm and that has been included in a previous alert. Preference will be given to bidders who can assist with the inclusion of the completed application in the play and itunes stores If succesful there may be a requirement for further similar applications that cover other countries (you may wish to build this functionality into the application from day one). There may also be further work incorporating additional classified advert sites (beyond gumtree) into the application. Please feel free to ask questions.