Notes is another awesome theme in the Post Format category. It allows you to use WordPress to post various post formats such as image, video, gallery, audio, quote, etc. like Tumblr blog. The theme design is inspired by the iPhone Notes app. It is a modern design theme with personal touches (light textured background and a bookmark ribbon). The layout is fluid and automatically adapted to any resolution on both desktop and mobile devices such as iPhone, iPad, Andriod, and Blackberry. To see this in action, view the demo and resize the browser window. See more responsive design themes.