Radiangames (Inferno+, Super Crossfire, Slydris, etc) is releasing its next game, JoyJoy, next Thursday, May 15th. It's a colorful, intense, and satisfying twin-stick arena shooter. It will be $1.99, and supports GameCenter and iOS7/MFi control pads (dual-stick version). Here's the trailer: More information can be found here: http://www.radiangames.com/preparing-for-relaunch/ Cheers, Luke Schneider Radiangames
From any other dev, I'd be worried about a twin stick shooter with no sticks, but you know this is going to control perfectly.
I'd buy this just on the principle of helping radiangames stay in business. That it looks like yet another awesome game from them only makes the spending even easier.