Quixxi offers Source code level obfuscation. The user can download the tool and run it on their local machine.
Quixxi obfuscation tool will rename classnames, protocol names and method names in the source code. The tool supports swift language, objection-C files will be excluded from the obfuscation. Third -party libraries used in the application will be excluded from the obfuscation.
You can download tool from Quixxi Portal --> Shield Tab --> Obfuscator Menu --> Download (Reference image below)
Please refer to this Link for submitting obfuscated application to the app store.