Annnnd another to-do-list app, this time called ‘Taasky’. But in all seriousness this is a gorgeously designed launching soon page with a clean minimal responsive layout.
This website has unfortunately been redesigned or gone offline, so I have removed the direct link to it. The screenshot below hopefully preserved enough of the design but if you are really keen to inspect further, try this Archive.org link. FYI: the site was first featured on 03 May 2013.