Best Wordpress Theme for Free Giveaway Site

Exactly as the title says, I am looking for a wordpress theme that is visually pleasing for a giveaway site. I've seen some that I could alter a little to fit my needs but I'm not very good with coding so it would take awhile.

I need something simple but appealing.

Also if anybody knows any plugins that offers a checkout method that doesn't require payment but instead social shares or other user actions, please point me in the right direction. Thanks

Try using some kind of magazine theme? Something with a lot of pictures. Checkout the ColorMag theme from ThemeGrill. It's free. I'm sure if you create a child theme you can customize it to your liking.

As for the plugin why not use a social locker plugin?