iOS Scrivener vs macOS Scrivener V3

I have converted my book from V2 to V3 and have used styles in quite a few places. It is a technical book so there are many images and figures. I had briefly tried the iOS version but didn’t use it much. I am now in a position where using my iPad would be nice. However, there are a few important things that I would need to do when inputting textm that I can’t see how to do using iOS:

  1. Use styles to adorn text such as headings and captions.
  2. Add images

How are other authors using the iOS version for books that need features like the above?