The data (pictures, etc) would live online. You could use a web browser to access or a phone app. Sounds like you want an offline only app, is that right?A simple app that would allow 2-3 photos for each entry and descriptions under each photo plus new/paid/sell values with a short general text box would be handy. When you say online database, would that be on a web site? I would prefer a simple app that is on my phone and does not rely on the web.