Nearly two years after riding a wave of post-election defections from X, Bluesky finds itself in a different position: its mobile audience is shrinking even as the platform expands its ambitions beyond the app itself. Main Developments Similarweb data shows Bluesky's mobile app attracted 10.4 million monthly active users worldwide in June 2026, a 27.2% drop year-over-year. Daily active users followed a similar trajectory, falling 25.6% in July to roughly 3 million. These numbers point to a widening gap between registered accounts and regular engagement. The platform continues to add new sign-ups, but a growing share of those users are not returning to the mobile experience on a consistent basis. Read also: Scaleup Europe's First Bet: ICEYE Backed by $5.7B Fund Background Bluesky emerged as one of the clearest beneficiaries of the November 2024 exodus from Elon Musk's X, when many users sought alternatives following the U.S. elections. That surge positioned the decentralized network as a credible competitor to the larger platform. The current decline suggests that a meaningful portion of those who joined out of frustration with X have not remained engaged long-term. Why It Matters For a platform positioning itself as a durable alternative to X, retention is the core challenge. A shrinking active base undercuts the network effects that make social platforms valuable, even if overall account growth continues. What's Next The question now is whether Bluesky's broader strategic pivot can translate into renewed engagement. Whether it can convert its expanded focus into sustained mobile usage will determine if this is a temporary dip or a longer-term trend.