Based on your project spec, the logos from <i>snipp</i> seem to be the most successful. I like how they use a similar set of colors to your screenshot. They are simple, elegant and compliment your app's UI.<p>If I had to choose, I would probably pick logo number 120. It's playful and modern. And I like the typeface!<p>But don't listen <i>too</i> much to other people. Part of the fun of running a startup is getting to choose your own logo! ;)