ValPHL is an iPhone app for exploring Philadelphia property assessment data from an open city data set.
Drop a pin on the map or type a property address in the search text field and you can query the Philly property assessment data set to see info like the citys assessment of the propertys market value and the date of the propertys most recently recorded sale.
Note: this product uses a City of Philadelphia Data API but it is not endorsed or certified by the City of Philadelphia.