Twitter has released a Kindle Fire app for its short video service Vine today.

Vine has enjoyed steady growth since Twitter acquired the service last year. Initially, Twitter released an iOS app for Vine followed by an Android version about four months later. I can’t help but wonder if the release of this Kindle Fire version has something to do with the company trying to keep up growth after Facebook’s recent announcement that its filtered-picture sharing service, Instagram, would be gaining the ability to record 15-second videos.

Since Instagram Video launched, some reports indicate that Vine usage has dropped off significantly — as much as 40 percent, as Marketing Land notes. The drop off could be temporary, as people may have just wanted to check out the shiny new Instagram feature. And even if Vine usage isn’t in decline, Twitter still  has good cause to worry. Instagram was perfectly tailored to Twitter prior to Facebook buying it. That means tons of Twitter users are not only familiar with Instagram, but they also probably still use it.

The release of a Kindle Fire Vine app might be one way of ensuring that it’s easy for people to continue using Vine. Honestly, I wouldn’t be surprised if Twitter was rushing to get a Vine app released on Windows Phone and BlackBerry for the same reason.

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The Vine Kindle Fire app is free and available now via Amazon’s Android app store.

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