The program starts off in the All Games tab. As the name implies this lists all Sega CD games released in the US, including the 32X ones. It doesn't support Japanese games but could if enough people asked for it.

The little icons underneath the title are a quick reference for what you have in your collection. The checkmark is whether you have the game, the B is for the box (for the first games that came in cardboard boxes), C for case, the paper-looking icon for instructions, and the heart for whether you're tracking it on the Wish List.

The My Games and Missing Games tabs list what you'd expect.

On the All Games, My Games, and Missing Games tabs you can click on a row to open the edit dialog. Here is where you set whether you have the game and stuff.

On the All Games, My Games, and Missing Games tabs the menu button on your phone brings up four items:

Title Filter: Filter the list by title (see below).
Export List: Save the current list to a .csv file if you want to import it somewhere else. Maybe one day I'll add an import feature for people already tracking their collection on a .csv file.
About: The standard about dialog for a program.
Quit: Also does that you'd expect.

The Title Filter menu brings up a dialog like the one pictured. Enter the text you want to filter by, it's not case sensitive and you don't need to enter wildcards. Click Clear Filter to remove the current filter. No need to go delete the text in the box or anything, just click the button.

The Wish List page looks different from the others because it's showing listings for the games you're tracking. Right now only ebay is being searched but if GameGavel adds an API I'll include them too.

If this takes a while to load it's because:
a) your data connection is slow (likely)
b) ebay is slow (fairly unlikely)
c) you have a ton of games on your wish list (moderately likely)

The auctions are sorted by date, newest on top.

Clicking on a row in the Wish List brings up the auction detail. Click on the blue link to launch ebay in your browser if you want to bid on an item. It sure would be cool (and time-consuming) to include better integration with ebay so you could bid directly from this program. This is another feature I'd consider adding if anyone downloads this and asks for it.

And a disclaimer of course: the author of this program is not responsible for anything that happens on ebay.