Safe postcode is a web tool that displays data from the UK Police API. We do not store any data we just display data stored by the UK police
Safe postcode first uses a postcode in order to generate a Latitude and Longitude, then once safe postcode has that information it requests a list of crimes that have happened in that area in the past 6 months directly from the police API
Safe postcode is a WYSIWYG system, which means that if you need to ask this it probably does not do it. But you can always request new functionality or report issues on Github