Numbers is a spreadsheet application developed by Apple Inc. as part of the iWork productivity suite alongside Keynote and Pages. Numbers 1.0 was announced on 7 August 2007 and thus it is the newest application in the iWork suite. Numbers runs on Mac OS X v10.4 'Tiger' or newer. On 27 January 2010, Apple announced a new version of Numbers for iPad with an all new touch interface. The app was later updated to support iPhone and iPod Touch. Numbers uses a free-form 'canvas' approach that demotes tables to one of many different media types placed on a page. Other media, like charts, graphics and text, are treated as peers. In comparison, traditional spreadsheets like Microsoft Excel use the table as the primary container, with other media placed within the table. Numbers also includes features from the seminal Lotus Improv, notably the use of formulas based on ranges rather than cells.