Coder8yg
No, I'm sorry, we don't provide any kind of custom development services at this time. So if you already have a developer, I'd suggest you ask them to do this integration for you.
Or Please Provide Me the Trial Version Of Both Plugin
Sorry, but what do you mean? Are you referring to our own POS?
If so, that isn't a plugin. Is a mobile App (actually in a beta testing phase for our premium users only). If you want to test it, please do open a private ticket and ask for it there.