I'm looking for software that will run on Windows, Android, and iPhone that will let me maintain a central database on the PC of guns, ammo, and other household items. It needs to be updatable from the mobile devices. NM Collector comes close, but it looks like the mobile portion creates a new entry rather than updates. Basically, I'd like to sit at the keyboard and build the bulk of the database, and then use the Android to snap photos, enter serial numbers, and round counts in the case of ammo. Ideas?