The "524" in your search query likely refers to a specific build number or a misinterpretation of , which was the final "hot" stable build before the developer abandoned the project in late 2012.
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: Often considered the spiritual successor to LauncherPro. It offers the same depth of customization (grid sizes, subgrid positioning, and dock styles) while staying updated for the latest Android versions. The "524" in your search query likely refers