Mark Zuckerberg's company, Meta, has unveiled a new app called Threads as a competitor to Twitter, positioning it as a "Twitter killer."

Threads is built by Instagram, which was acquired by Meta over a decade ago, and aims to provide a platform for real-time, public conversations.

The app achieved 5 million sign-ups within four hours of its launch and quickly grew to 10 million.

Elon Musk, who owns Twitter, dismissed Threads and claimed to have canceled his Instagram account, stating a preference for Twitter's open environment.

Threads closely integrates with Instagram, requiring users to have an Instagram account and enabling them to import their Instagram followers.

Threads resembles Twitter in terms of its interface, allowing users to post text-based messages, photos, and videos to a scrolling feed.

Unlike Twitter, Threads does not currently support direct messaging, but Instagram may add features based on user feedback.

Instagram decided to create Threads as a separate app to simplify its main platform and capitalize on the demand for public conversations.

Instagram's long-term goal is to have Threads work across multiple apps within the "Fediverse," making it easier for creators to operate seamlessly across platforms.

Meta has a history of imitating and cloning features from rival apps, with Reels being an example of its success in this regard. Threads is initially available in the United States and other countries, but not in the European Union due to data-sharing limitations imposed by new regulations.