We would prefer a logo that can even be used without the name of our product but retaining it's distinctiveness. In other words, our customers should still be able to associate the logo with the product.
Our application stands out for being very personalized, not as being "yet another" task manager. Please try to create a logo that focuses on the personal aspect, the app is more comparable to a digital secretary rather than an ordinary calendar.
You can read more about our product on http://www.lifeblaze.at, but keep in mind that the design of the site is only temporary so you shouldn't take it as a reference for your design.
*Addition from 25th of October, 2013:
The logo should primarily be designed for bright backgrounds. However, feel free to additionally add drafts on how the logo would look with different colors in the back.
We prefer logos with a flat design, meaning no gradients. If you think your logo would look better without this restriction don't worry - it's not written in stone.
*Addition from 28th of October, 2013:
Some keywords for finding the appropriate symbolism: Personalized, Organize, Time Management, Assistant