An anonymous reader shared this report from TechCrunch: According to data from digital intelligence provider Similarweb, Bluesky's mobile app had 10.4 million monthly active users worldwide in June 2026, down 27.2% year-over-year. In addition, mobile daily active users continued to decline, falling 25.6% year-over-year in July to around 3 million... Bluesky's app has lost more than half its monthly active users from its late-2024 high... Its quarterly average was around 22.1 million monthly active users in the fourth quarter of 2024, Similarweb's data indicates, and it declined to 10.7 million in the second quarter of 2026. That's a decline of around 52%. While Bluesky's numbers are down, those who stuck around are committed. Its smaller community remains relatively active, with a stickiness rate (the ratio of daily to monthly active users) of roughly 29% in June, about the same as Threads. For Bluesky's new CEO, Toni Schneider, these numbers may not be as concerning. The company is not entirely focused on making Bluesky (the app) succeed, but on making it possible for the underlying protocol (AT Proto) to power a growing number of social apps, services, and communities. That's something that is now taking place, as projects like BlackSky and Eurosky are growing, while some AT Proto apps like the video-focused Skylight have found early traction, too. In addition, the company has launched new products, like the AI-powered research tool Attie, and is now working on adding support for private data to Bluesky. The latter could generate new interest in Bluesky from a different type of user — those less interested in the public square, and more interested in private networking and communities. But on Threads in July of 2026, daily active users were up 21.3% year-over-year to 147 million, the article points out, and website visits were up 112% year-over-year to 471.6 million. And Threads now appears to have roughly 66% more monthly active users than X.

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An anonymous reader shared this report from TechCrunch: X is significantly expanding its open source codebase, which includes the app's "For You" algorithm and its core ranking engine, and adding a feature that will let users see if their account or posts have been impacted by any of its ranking systems, the social network said on Thursday. The company is making the source code for the "For You" timeline, the default feed you see when you open the app, available on GitHub under the Apache v2 license. It's also expanding its previous efforts to open source parts of its codebase to add more detail, including the model configuration, filter, and core ranking system details. That means it includes the parameters used to weight different signals — key to understanding which posts are actually displayed. This also makes the codebase roughly 10 to 15 times larger than it was before. "You'll get the core ranking code that pulls posts and ranks them for any given user and assembles the feed," X's VP of Product Keith Coleman told TechCrunch in an interview ahead of the announcement. "You can see the systems that filter out potentially problematic, rule-violating content...And some of those systems, like the ranker and the score, you can even run yourself outside the company." "This is the kind of thing that I think people will be fairly shocked that we are releasing," he added. In addition to the repository, X is providing tools that will let users see for themselves if and how X's ranking systems have impacted their account or posts. A new transparency tool is rolling out to an "Under the Hood" page in the app's settings, which will let users who have posted 10 or more times over the past month download their aggregate stats as a JSON file. The file will show if any labels have been applied to their account or posts over the past calendar month. X's VP of Product told TechCrunch that X engineers will consider pull requests. "That would be amazing to have people submitting code that improves the algorithm...I mean, how cool would it be for the X algorithm to be not just visible to the public, but also, like, by the public?"

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