I'm creating a locator app as a project for one of my classes. The main menu of the app lists different categories of items for the app to locate and show the user via a map.
Right now, I have about 8 different categories and I don't think that list will be expanding (especially since the scope of the project is limited to the end of the semester).
If I use Apple's native icon based approach, I only have 2 rows of icons on the screen and a bunch of unused space that I just don't need. And instead of trying to just come up with features I don't need to fill the space, I want to see if there's a more intuitive way to display this information on the screen.
Here's a mock up of what I have now:

As you can see, there's just a bunch of empty space after the menu.
What would be a better way to create a menu this small? I don't want to use a UITableView for it as I am already using that in another part of the app and I don't want the stacks of TableViews to get really high.
(Please let me know if this would be better asked at graphicdesign.stackexchange.com)