Hi sorin.jurcut,
Welcome to Affinity Forums and thanks for your words/feedback :)
There's plenty of free iOS, Android etc UI/icon templates that you can import into Designer (and save in the Assets panel). Affinity Designer already includes one for free (Grade UI KIT) in version 1.5. There will be a mirror/viewer app for iOS available later.
Currently there's no plans to add scripting to the app in the short/medium term. We are committed to implement what was defined on Designer's roadmap first.
