Twitter has purchased Android alternative lock-screen startup Cover, according to ZD Net. The value of the acquisition was not disclosed in the said report.

The Cover team said in a post on its official site: "Twitter, like Cover, believes in the incredible potential of Android. We built a replacement for Android's default lock-screen that makes our phones easier to use by adapting to our context - providing fast access to the right apps at the right time... So what does this mean for the Cover app? For now, Cover will remain available in the Play Store while we focus our attention on our work at Twitter."

Through this transaction, Twitter will be able to boost the popularity of its service among Android smartphone users. The workforce of Cover has now joined Twitter in its San Francisco headquarters, the report detailed.

Launched just a year ago, Cover has made its service exclusive to Android devices; taking advantage of the latter's soaring popularity. In October 2013, the free app was released on Google Play and has been used by hundreds of thousands already, ZD Net reported.