San Francisco—Twitter Inc. has extended its Vine video social network to tablets, with an initial launch on Amazon.com Inc.'s Kindle Fire.
Twitter purchased the Vine app in January; it enables users to capture and share videos of no more than 6 seconds in length and was initially available on Apple Inc. smartphones. A version for smartphones running Google Inc.'s Android operating system was released in June.
Users of the new Kindle Vine app will be able to create and upload their videos on Vine before sharing them on Twitter and Facebook. Vine's main competitor, Facebook Inc.'s Instagram, does not yet offer a native app for any tablet computer.