It is cost-effective for data owners to publicize their spatial databases via database outsourcing; however, data privacy and query integrity are major challenges. In this demonstration, we implemented the INTACT (spatial query INTegrity AssuranCe framework for locaTionbased services) framework on the iPhone and the .NET Framework that protects data privacy using space encryption and ensures query integrity via audit queries. Categories and Subject Descriptors H.2.8 [Database Management]: Database Application—spatial databases and GIS General Terms Algorithms and Experimentation Keywords Spatial database outsourcing, location-based services