Depends on your use case, there is an API endpoint for the software, it is server side only, so you might need to add a proxy to the api for creating tickets from your app. Really, the easiest way would be to simply create an email.
Clients can interact via email, which has links to the web interface..
I've not heard of anything that will help, but I've not looked either.
I have some restful soap code from the 1.7 days when we used an app on our remote staff iPads, that night be upgradable if you're prepared to build the client UI.