We're just going to come out and say it: Zero, the new to-do list app from tomzorz labs, borrows heavily in inspiration from an iPhone app called Clear (see the iMore review). What makes that funny is Clear is understood as borrowing heavily from Microsoft's Metro UI design language meaning we're finally coming full circle with Clear Zero coming back to Windows Phone.
The to-do list/task manager app is very minimalist in design with zero chrome, ahem. It is primarily gesture based forgoing the traditional bottom-bar method found in most Windows Phone apps--in that sense, it actually deviates against Metro UI but only because it's going more minimalist instead of less. Gestures are simple and universal: up/down to create, left to delete, right to check off, pinch in to go back, pinch out to re-order lists. Because of the gestures, you'll need to tap through a brief (but well done) tutorial at first but you'll lean the system quick enough.
The app itself is clean, fast and to the point and because of that we like it a lot. The Live Tile adds a nice counter though it could perhaps be augmented with a rear tile for more info (space permitting though). Likewise, tying into the Toast notification system could be a good idea in the future to make this a true "reminder" app. We are looking forward though to the back-up feature which we presume will be based on SkyDrive.
You can pick up Zero with a free trial here in the Marketplace for $0.99.