Nikita Bier shipped nearly 30 products in just over a year as X's product chief, then walked away. On August 5, he announced he would step back from the role to become an advisor, capping a tenure that rewrote X's core infrastructure but left the platform's actual growth in question.
When Bier joined in July 2025, he had already proven himself twice. He built tbh and Gas, two teen-focused apps that Facebook and Discord each bought after they hit No. 1 on the US App Store. At X, his mandate was bigger. He rebuilt the timeline, rewrote the Android app, overhauled notifications and chat, and shipped features most users never heard about.
The Numbers That Caught Wall Street's Attention
Some of his bets moved markets. A pilot that embedded live trading data directly into posts generated an estimated $1 billion in Cashtags trading volume within 48 hours. He launched Grok-powered custom timelines, a topic snooze tool, and country-of-origin labels. His team pushed the XChat app to the top of the App Store, beating ChatGPT and Claude on launch day.
Bier claimed X climbed 70 spots in the App Store within a year. That figure came from him alone. No independent tracker has published X's August 2025 ranking, and the picture varies by category. Today X sits at No. 6 among free iPhone apps in the main chart but near No. 34 across all categories combined.
The Darker Backdrop
Revenue and download data told a rougher story. SpaceX's May IPO filing revealed X had 550 million monthly users in March, down from the 600 million the company had publicly stated. Ad revenue for 2025 landed at $1.8 billion, a sharp collapse from $4.4 billion in 2022 before Musk bought the platform. App analytics firm Appfigures counted 104 million downloads in 2025, a 13% decline year-over-year.
The product wins drew fierce backlash. On December 5, Brussels fined X 120 million euros for non-compliance under the Digital Services Act, the first such penalty ever issued. Bier terminated the European Commission's ad account the very next day. Crypto traders attacked him in January, accusing him of suppressing crypto posts, a charge that gained weight after he joined Solana as an advisor despite working on a platform competing for crypto users' attention.
Bier's exit leaves unclear whether X's product velocity translated into the business results Musk needed. Shipped products and growth momentum proved to be two very different things.
This article provides factual information about X's product developments and publicly disclosed financials. It is not investment advice or a recommendation to trade or invest in any asset.
