Mana.boLogo Design Contest

We connect some kind of digital-pen or pen-tablet for the app and which is the typical advantage comparing to other alike softwares. So if you use a symbol in your logo , "pen" would be better.

Moreover , I think this is just my preference ,but if you use accent color for the logo , I prefer "yellow" rather than bule or red. And the "green" should be stronger.See sample below.I love this tone.
i.e)https://www.bcg.com/join_bcg/default.aspx

You don't need to add the slogan "more exciting and more effective way to learn" in your logo .
As I see the logos which are already submitted , I like simple ones better.