If I'm a mobile developer who wants to integrate bitcoin cash in an app, how can I generate Bitcoin Cash addresses programmatically, without relying on a 3rd party service, like Coinbase?
You can use the following library to generate bitcoin address using Swfit on IOS
Please note that the legacy bitcoin cash and bitcoin address is the same the only difference is the network.
if you're looking for cashAddr (qq address) format, take a look on these open source libraries:
Original cashAddr algorithm (C++)
it's pretty easy to read and understand, you can translate it to any language.