Bluesky's Mobile User Base Has Halved Since Late 2024 as Strategy Shifts to AT Proto
Bluesky's mobile app had 10.4 million monthly active users worldwide in June 2026, down 27.2% year-over-year, according to Similarweb data reported by TechCrunch. Mobile daily active users fell 25.6% year-over-year in July 2026 to roughly 3 million. The decline is not a recent inflection but a continuation of a steady erosion: the app averaged about 22.1 million monthly active users in the fourth quarter of 2024, declining to 10.7 million by the second quarter of 2026, a drop of around 52% over eighteen months (TechCrunch).
The arc is familiar to anyone who tracked Bluesky's post-election surge. In November 2024, the platform surpassed 20 million users as a wave of departures from X drove daily usage up approximately 500% in the U.S., even as more than 115,000 users deactivated their accounts during the same period, per NPR (NPR). By December 2024, Bluesky's safety account reported that over 12 million people had joined in the past month and daily active users had grown tenfold (Bluesky Safety). By January 2025, that growth had already begun slowing, with growing pains including user protests over moderation policies and bot issues (TechCrunch). By November 2025, daily active users were down nearly 40% year-over-year, per Forbes (Forbes).
Bluesky's mobile app stickiness rate, the ratio of daily to monthly active users, sat at roughly 29% in June 2026, about on par with Threads (TechCrunch). That metric matters because it measures habitual engagement rather than raw reach, and parity with Threads suggests that retention, not acquisition, is the constraining variable.
For context, Threads reported more than 275 million monthly active users as of November 2024, a baseline that dwarfs Bluesky's (TechCrunch). X, meanwhile, had around 302 million mobile monthly active users as of June 2026, with mobile DAU down 7% year-over-year in July 2026 to 123.7 million. X's web visits were up 5.3% year-over-year in July 2026 to 4.7 billion (TechCrunch). So both X and Bluesky are losing mobile DAU, though at very different scales and rates.
Toni Schneider, who dropped the interim label to become Bluesky's CEO in July 2026, is presiding over a strategic pivot that looks past the flagship app. Bluesky is concentrating on the underlying AT Protocol (AT Proto), which powers a growing number of social applications including BlackSky and Eurosky. The company launched Attie, an AI-powered research tool, in July 2026, and is working on adding support for private data to the platform (TechCrunch). In May 2026, Bluesky also embraced long-form content to counter X Articles, letting users read articles and blog posts beyond short microblog posts (TechCrunch).
The protocol-level bet is visible in earlier roadmap decisions. Bluesky's 2024 Protocol Roadmap noted that feed services had no feedback on how users interacted with them, and announced a new endpoint for clients to submit behavior metrics to feed services (Bluesky Docs). The company's first transparency report, issued in January 2026, recorded a rise in user reports and legal demands, though reports per 1,000 monthly active users declined 50.9% from January to December (TechCrunch).
The question worth weighing is whether AT Proto can succeed as infrastructure even if the Bluesky app itself plateaus or continues contracting. The parallel that comes to mind is the early web, where individual browsers and portals rose and fell while the underlying protocols endured. The difference, of course, is that HTTP did not need a single consumer app to retain a critical mass of daily users to demonstrate viability. AT Proto's ecosystem of third-party apps like BlackSky and Eurosky is still nascent, and protocol adoption has historically required either a killer app or sustained institutional backing to cross the threshold of self-reinforcing network effects.
Bluesky's leadership appears to be making a calculated trade: accepting app-level user erosion as the cost of building protocol-level credibility. Whether that trade pays off depends on whether developers build enough on AT Proto to create a distributed network that does not depend on any single app's DAU charts. The early signals, the growing number of AT Proto apps and the launch of tooling like Attie, are promising but not yet conclusive.
The competitive landscape adds pressure. X is losing mobile users slowly and gaining web traffic. Threads has a vastly larger installed base. Mastodon occupies a similar federated niche without Bluesky's protocol-as-product framing. Bluesky is betting that the infrastructure layer is where durable value accrues, even as the consumer app that brought it attention continues to shrink.
