If you ever find yourself having to debug someone else’s code without access to their, uh, code, then this disassembler may be the tool for you.
Also, good luck and may the force be with you, friend. 😳🤯🤓
Hopper Disassembler, the reverse engineering tool that lets you disassemble, decompile and debug your application
Looks like you can decompile Linux and Mac code (include Swift), but not iOS.
patmcg.com 
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