The best alternatives to Swift ToolBox are Swift AI, Render, and SwiftHub. If these 3 options don't work for you, we've listed a few more alternatives below.
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In this app you can learn Swift language, discover articles, news, books, podcasts, documentations, videos, Swift syntax, find your queries on Stack Overflow, Swift challenges, bookmark your favorite topics, get access to popular GitHub repositories & so on.
This app is a great way to get an algorithm or method down on the go and make sure it works. You can use it as a playground to test Swift code quickly or review concepts.