Sketch is used mainly for designing the
UI and
UX of
mobile apps and web. The files designed in Sketch are saved in its own .sketch file format, though the files can also be opened in
Adobe Illustrator,
Adobe Photoshop, and other programs. The designs can also be exported to
raster or
vector formats such as
PNG,
JPG,
SVG, and
PDF. The designs created in Sketch are utilized by app engineers to design mobile apps and by website developers to convert designs into websites. Although Sketch was previously sold through the
App Store, the developers pulled the app from the store in December 2015 and instead sold it through its own website. It cited Apple's strict technical guidelines, slow review process and lack of upgrade pricing as reasons for the decision. On 8 June 2016, it announced on its blog that it was switching to a new licensing system for Sketch. Licenses would allow users to receive updates for 1 year, after which they could continue using the last version published prior to the license expiring, or renew their license to continue receiving updates for another year. == See also ==