Meta's Twitter competitor is off to a strong start. According to Quiver Quantitative's Threads Tracker, Threads has more than 100 million users in less than 5 days since the app went live. Threads is a sister app to Instagram, and it helps that the image-sharing platform's more than 1 billion users can easily sign up — unless they live in the EU, where the platform hasn't launched yet.

Meta Platforms’ (META), formerly Facebook’s, CEO Mark Zuckerberg provided several updates on Threads user numbers. The app had 10 million users in its first seven hours and surpassed 30 million as of Thursday morning. After about 24 hours, that number had more than doubled.

It's very, very early days for Threads to really judge, as the app lacks basic functionality that many users find essential. There are currently few accessibility options, and screen reader users cannot attach alt text to images. Search is limited to usernames, there's no hashtag support, and you can't post to threads from the Web.