This may have been posted about before but:
For those of you looking for an easy to use comprehensive database for your Mac or PC you might like to look at the link below. Got this app a couple weeks ago for my Mac and this works! Easy to install, easy to learn, and keeps a record of your guns, accessaries , holsters, ammo, and photos. You can download a trial version and then purchase if you like. Cost for full version is $39.95 and the guy who wrote it is very helpful and a good guy to work with.
Download the trial version and explore.
Mygundb.com
Pecos