Not an "App", it's only tested on windows 7, 8 and some Linux systems running wine, but can run summary statistics on all collected data, do graphing, and host all data locally or on a SMB/CIFS share or SQL server if using on multiple systems. Note it is still in development and has issues, but is free to try out. (the software is signed only with my private keys and does not have a valid CA distributed certificate, so it will warn you that the publisher is unknown/untrusted)
http://centaurisoft.org/scout.html - Scouting software
http://centaurisoft.org/ssql.html - Custom easy to setup MySQL server.