^hot^ - Inject Dylib Into Ipa

Alternatively, you can use a tool like install_name_tool to update the load libraries:

A decrypted IPA file. You cannot inject dylibs into encrypted IPAs straight from the App Store. The Dylib: The compiled binary you wish to inject. Inject Dylib Into Ipa

For jailbroken devices, the community patch libhooker and Substitute continue to work, but the jailbreak population is shrinking. Alternatively, you can use a tool like install_name_tool