How to log into Spark via Bluesky Introduction At the time of this post, the beta for Spark, a short-form video and photo platform built on ATProtocol (the same protocol that powers Bluesky), just launched this past weekend on iOS and Android for people who supported the platform's funding campaign. The Android support from the start is one of the things that makes Spark stand out from its contemporaries, which have prioritized iOS. Another thing that makes Spark stand out is the fact that it has its own instance of the ATProtocol, independent of Bluesky, whereas a lot of similar apps rely on Bluesky's specific instance of the ATProtocol.